{"title":"[A preliminary report of laparoscopic extraperitoneal colostomy anterior to posterior sheath of rectus abdominis-transversus abdominis to prevent parastomal hernia].","authors":"Z Y Li, B Wang, B B Zheng, J Qiu","doi":"10.3760/cma.j.cn112139-20220903-00375","DOIUrl":"https://doi.org/10.3760/cma.j.cn112139-20220903-00375","url":null,"abstract":"<p><p><b>Objective:</b> To examine the preliminary effect of laparoscopic extraperitoneal colostomy anterior to posterior sheath of rectus abdominis-transversus abdominis for the prevention of parastomal hernia after abdominoperineal resection for rectal cancer. <b>Methods:</b> This study is a prospective case series study. From June 2021 to June 2022, patients with low rectal cancer underwent laparoscopic abdominoperineal resection combined with extraperitoneal colostomy anterior to posterior sheath of rectus abdominis-transversus abdominis at the First Department of General Surgery, Shaanxi Provincial People's Hospital were enrolled. The clinical data and postoperative CT images of patients were collected to analyze the incidence of surgical complication and parastomal hernia. <b>Results:</b> Totally 6 cases of patient were enrolled, including 3 males and 3 females, aging 72.5 (19.5) years (<i>M</i>(IQR)) (range: 55 to 79 years). The operation time was 250 (48) minutes (range: 190 to 275 minutes), the stoma operation time was 27.5 (10.7) minutes (range: 21 to 37 minutes), the bleeding volume was 30 (35) ml (range: 15 to 80 ml). All patients were cured and discharged without surgery-related complications. The follow-up time was 136 (105) days (range: 98 to 279 days). After physical examination and abdominal CT follow-up, no parastomal hernia occurred in the 6 patients up to this article. <b>Conclusions:</b> A method of laparoscopic extraperitoneal colostomy anterior to posterior sheath of rectus abdominis-transversus abdominis is established. Permanent stoma can be completed with this method safely. It may have a preventive effect on the occurrence of parastomal hernia, which is worthy of further study.</p>","PeriodicalId":23966,"journal":{"name":"Zhonghua wai ke za zhi [Chinese journal of surgery]","volume":"61 6","pages":"481-485"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9752956","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"[Summary of experience with patterning cropped and shaped mesh repair for perineal hernia after abdominoperineal excision in rectal cancer].","authors":"Y P Chen, X Zhang, C Z Lin, G Z Liu, S G Weng","doi":"10.3760/cma.j.cn112139-20230130-00040","DOIUrl":"https://doi.org/10.3760/cma.j.cn112139-20230130-00040","url":null,"abstract":"<p><p><b>Objective:</b> To examine the patterning cropped and shaped mesh repair for perineal hernia after abdominoperineal excision (APE) in rectal cancer. <b>Methods:</b> The clinical data of 8 patients with perineal hernia after APE who accepted surgical treatment in the Department of Hepatopancreatobiliary and Hernia Surgery, the First Affiliated Hospital of Fujian Medical University from March 2017 to December 2022 were retrospectively reviewed. There were 3 males and 5 females, aged (67.6±7.2) years (range: 56 to 76 years). Eight patients developed a perineal mass at (11.3±2.9) months (range: 5 to 13 months) after APE. After surgical separation of adhesion and exposing the pelvic floor defect, a 15 cm×20 cm anti-adhesion mesh was fashioned as a three-dimensional pocket shape to fit the pelvic defect, then fixed to the promontory or sacrum and sutured to the pelvic sidewalls and the anterior peritoneum, while two side slender slings were tailored in front of the mesh and fixed on the pectineal ligament. <b>Results:</b> The repair of their perineal hernias went well, with an operating time of (240.6±48.8) minutes (range: 155 to 300 minutes). Five patients underwent laparotomy, 3 patients tried laparoscopic surgery first and then transferred to laparotomy combined with the perineal approach. Intraoperative bowel injury was observed in 3 patients. All patients did not have an intestinal fistula, bleeding occurred. No reoperation was performed and their preoperative symptoms improved significantly. The postoperative hospital stay was (13.5±2.9) days (range: 7 to 17 days) and two patients had postoperative ileus, which improved after conservative treatment. Two patients had a postoperative perineal hernia sac effusion, one of them underwent placement of a tube to puncture the hernia sac effusion due to infection, and continued irrigation and drainage. The postoperative follow-up was (34.8±14.0) months (range: 13 to 48 months), and 1 patient developed recurrence in the seventh postoperative month, no further surgery was performed. <b>Conclusions:</b> Surgical repair of the perineal hernia after APE can be preferred transabdominal approach, routine application of laparoscopy is not recommended, combined abdominoperineal approach can be considered if necessary. The perineal hernia after APE can be repaired safely and effectively using the described technique of patterning cropped and shaped mesh repair.</p>","PeriodicalId":23966,"journal":{"name":"Zhonghua wai ke za zhi [Chinese journal of surgery]","volume":"61 6","pages":"486-492"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9752959","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"[How do young surgeons understand and grasp the new concepts, new techniques, and recent progress of hernia and abdominal wall surgery?]","authors":"Z W Liu, Z Cao","doi":"10.3760/cma.j.cn112139-20230116-00026","DOIUrl":"https://doi.org/10.3760/cma.j.cn112139-20230116-00026","url":null,"abstract":"<p><p>With the development of modern surgery, the field of hernia and abdominal wall surgery is undergoing a transformative change, and new techniques, new concepts, and recent progress are being updated, which have motivated the high-quality development of the discipline. In the past two decades, the development of hernia and abdominal wall surgery in China has been recognized by international peers. Many young surgeons have gradually become the main force in the treatment of hernia and leaders in surgical technique. The innovation and development of discipline will never terminate; young surgeons as the main force should seriously think about how to improve their professional qualities. Young surgeons are interested in the innovation of surgical techniques and need to push for a traditional operation on the one hand and an innovative operation on the other. Updates to concepts and acquisition of new materials are more important, which can provide a solid foundation for technological innovation. Young surgeons should start with the basics and classics. Understanding the history and development of new techniques, new concepts and recent progress, and grasping indications of clinical application, is the important part of growing up for young surgeons, which can make surgical treatment more standardized, benefit patients, and promote the progress of Chinese specialized medical education.</p>","PeriodicalId":23966,"journal":{"name":"Zhonghua wai ke za zhi [Chinese journal of surgery]","volume":"61 6","pages":"456-461"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9752960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"[Discussion on how to optimize active surveillance for low-risk papillary thyroid microcarcinoma in China].","authors":"S Xue, P S Wang, Q Y Lu, G Chen","doi":"10.3760/cma.j.cn112139-20221014-00442","DOIUrl":"https://doi.org/10.3760/cma.j.cn112139-20221014-00442","url":null,"abstract":"<p><p>Active surveillance, as a first-line treatment strategy for low-risk papillary thyroid microcarcinoma, has been recommended by guidelines worldwide. However, active surveillance has not been widely accepted by doctors and patients in China. In view of the huge challenges faced by active surveillance, doctors should improve their understanding of the \"low risk\" of papillary thyroid micropapillary cancer, identify some intermediate or high-risk cases, be familiar with the criteria and methods of diagnosis for disease progression, and timely turn patients with disease progression into more active treatment strategies. By analyzing the long-term cost-effectiveness of active surveillance, it is clear that medical expense is only one cost form of medical activities, and the health cost (thyroid removal and surgical complications) paid by patients due to\"over-diagnosis and over-treatment\" is the most important. Moreover, the weakening of the patients' social function caused by surgical procedures is a more hidden and far-reaching cost. The formulation of health economic policies (including medical insurance) should promote the adjustment of diagnosis and treatment behavior to the direction which is conducive to the long-term life and treatment of patients, improving the overall health level of society and reducing the overall cost. At the same time, doctors should stimulate the subjective initiative of patients, help them fully understand the impact of various treatment methods on their psychological and physical status, support patients psychologically, and strengthen their confidence in implementing active surveillance. By strengthening multi-disciplinary treatment team and system support, doctors can achieve risk stratification of papillary thyroid microcarcinoma, accurate judgment of disease progress, timely counseling for psychological problems, and long-term adherence to active surveillance. Improving the treatment level of advanced thyroid cancer is the key point of improve the prognosis. It is important to promote the development of active surveillance for low-risk papillary thyroid microcarcinoma. In the future, it is necessary to carry out multi-center prospective research and accumulate research evidence for promoting the standardization process of active surveillance. Standardized active surveillance will certainly benefit specific papillary thyroid microcarcinoma patients.</p>","PeriodicalId":23966,"journal":{"name":"Zhonghua wai ke za zhi [Chinese journal of surgery]","volume":"61 6","pages":"462-466"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10130163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"[Clinical value of mesh prophylaxis for parastomal hernia based on evidence-based medicine].","authors":"F Yue, J W Li","doi":"10.3760/cma.j.cn112139-20230116-00024","DOIUrl":"https://doi.org/10.3760/cma.j.cn112139-20230116-00024","url":null,"abstract":"<p><p>The incidence of parastomal hernia is substantially high, significantly affecting the quality of life of patients with stoma. How to effectively solve the problem of parastomal hernia is a long-term focus of hernia and abdominal wall surgery and colorectal surgery. The <i>European Hernia Society guidelines on prevention and treatment of parastomal hernia</i> published in 2018 has recommended the use of a prophylactic mesh to prevent parastomal hernia for the first time. In the following 5 years, more randomized controlled trials of multi-center, large-sample, double-blind, long-term follow-up have been published, and no significant effect of mesh prophylaxis has been observed on the incidence of parastomal hernia. However, whether mesh could decrease surgical intervention by limiting the symptoms of parastomal hernias would become a potential value of prophylaxis, which requires further research to elucidate.</p>","PeriodicalId":23966,"journal":{"name":"Zhonghua wai ke za zhi [Chinese journal of surgery]","volume":"61 6","pages":"446-450"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9750542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
H L Yin, N Pu, Q D Chen, J C Zhang, Y L Xu, C Y Shi, M Z Lyu, W H Lou, W C Wu
{"title":"[The beginnings and evolution of a pancreatic surgeon: a technical morphological analysis in first 5 years].","authors":"H L Yin, N Pu, Q D Chen, J C Zhang, Y L Xu, C Y Shi, M Z Lyu, W H Lou, W C Wu","doi":"10.3760/cma.j.cn112139-20221027-00462","DOIUrl":"https://doi.org/10.3760/cma.j.cn112139-20221027-00462","url":null,"abstract":"<p><p><b>Objective:</b> To explore the development of the pancreatic surgeon technique in a high-volume center. <b>Methods:</b> A total of 284 cases receiving pancreatic surgery by a single surgeon from June 2015 to December 2020 were retrospectively included in this study. The clinical characteristics and perioperative medical history were extracted from the medical record system of Zhongshan Hospital,Fudan University. Among these patients,there were 140 males and 144 females with an age (<i>M</i> (IQR)) of 61.0 (16.8) years(range: 15 to 85 years). The \"back-to-back\" pancreatic- jejunal anastomosis procedure was used to anastomose the end of the pancreas stump and the jejunal wall. Thirty days after discharge,the patients were followed by outpatient follow-up or telephone interviews. The difference between categorical variables was analyzed by the Chi-square test or the CMH chi-square test. The statistical differences for the quantitative data were analyzed using one-way analysis of variance or Kruskal-Wallis <i>H</i> test and further analyzed using the LSD test or the Nemenyi test,respectively. <b>Results:</b> Intraoperative blood loss in pancreaticoduodenectomy between 2015 and 2020 were 300,100(100),100(100),100(0),100(200) and 150 (200) ml,respectively. Intraoperative blood loss in distal pancreatectomy was 250 (375),100 (50),50 (65), 50 (80),50 (50),and 50 (100) ml,respectively. Intraoperative blood loss did not show statistical differences in the same operative procedure between each year. The operative time for pancreaticoduodenectomy was respectively 4.5,5.0(2.0),5.5(0.8),5.0(1.3),5.0(3.3) and 5.0(1.0) hours in each year from 2015 to 2020,no statistical differences were found between each group. The operating time of the distal pancreatectomy was 3.8 (0.9),3.0 (1.5),3.0 (1.8),2.0 (1.1),2.0 (1.5) and 3.0(2.0) hours in each year,the operating time was obviously shorter in 2018 compared to 2015 (<i>P</i>=0.026) and 2020 (<i>P</i>=0.041). The median hospital stay in 2020 for distal pancreatectomy was 3 days shorter than that in 2019. The overall incidence of postoperative pancreatic fistula gradually decreased,with a incident rate of 50.0%,36.8%,31.0%,25.9%,21.1% and 14.8% in each year. During this period,in a total of 3,6,4,2,0 and 20 cases received laparoscopic operations in each year. The incidence of clinically relevant pancreatic fistula (grade B and C) gradually decreased,the incident rates were 0,4.8%,7.1%,3.4%,4.3% and 1.4%,respectively. Two cases had postoperative abdominal bleeding and received unscheduled reoperation. The overall rate of unscheduled reoperation was 0.7%. A patient died within 30 days after the operation and the overall perioperative mortality was 0.4%. <b>Conclusion:</b> The surgical training of a high-volume center can ensure a high starting point in the initial stage and steady progress of pancreatic surgeons,to ensure the safety of pancreatic surgery.</p>","PeriodicalId":23966,"journal":{"name":"Zhonghua wai ke za zhi [Chinese journal of surgery]","volume":"61 6","pages":"511-518"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10112363","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"[Analysis of recurrent factors and therapeutic effect after laparoscopic inguinal hernia repair].","authors":"Y C Liu, Y L Zhu, F Wang, M G Wang","doi":"10.3760/cma.j.cn112139-20230116-00028","DOIUrl":"https://doi.org/10.3760/cma.j.cn112139-20230116-00028","url":null,"abstract":"<p><p><b>Objective:</b> To analyze the recurrence factors and reoperation effect of laparoscopic inguinal hernia repair. <b>Methods:</b> A total of 41 patients with recurrence after laparoscopic repair of the inguinal hernia admitted to the Department of Hernia and Abdominal Wall Surgery, Beijing Chaoyang Hospital Affiliated to Capital Medical University from January 2017 to December 2021 were retrospectively analyzed. All patients were males, aging (62±7) years (range: 51 to 75 years). The recurrence intervals were 3 days to 7 years postoperatively. The surgical methods, causes of recurrence, and treatment outcomes of the patients were analyzed. Fisher exact probability method is used to compare the rates. <b>Results:</b> Among all cases, the primary surgical procedures included transabdominal preperitoneal herniorrhaphy (TAPP) in 31 cases and total extraperitoneal herniorrhaphy in 10 cases. The reoperative procedures included the TAPP of 11 cases and the Lichtenstein procedure of 30 cases. The factors of recurrent cases in all patients could be divided into 4 categories, including insufficient mesh coverage in 23 cases, mesh curling in 9 cases, mesh contractuture in 7 cases, and improper mesh fixation in 2 cases. Recurrence, infection, chronic pain, foreign body sensation didn't occur in the followed period of(<i>M</i>(IQR)) 18(24) months(range: 12 to 50 months). There was no statistical difference in the incidence of postoperative seroma between the TAPP and Lichtenstein procedure (3/11 <i>vs.</i> 20.0% (6/30), <i>P</i>=0.68). <b>Conclusions:</b> Postoperative recurrence of laparoscopic inguinal hernia is mostly caused by the lack of mesh coverage. Due to the emphasis on standardized surgical operation, a good outcome could be achieved through reoperation by the TAPP or Lichtenstein procedure.</p>","PeriodicalId":23966,"journal":{"name":"Zhonghua wai ke za zhi [Chinese journal of surgery]","volume":"61 6","pages":"507-510"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9752962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"[Opportunities and challenges for the high-quality development of hernia and abdominal wall surgery in China].","authors":"J X Tang, Y Gu","doi":"10.3760/cma.j.cn112139-20230128-00038","DOIUrl":"https://doi.org/10.3760/cma.j.cn112139-20230128-00038","url":null,"abstract":"<p><p>Hernia and abdominal wall surgery is a relatively new subspecialty in surgery. Although it started late in China, after 25 years of rapid development, it has made remarkable achievements and has become an important part of surgery, laying a solid foundation for the further development of the discipline. At the same time, one should also be soberly aware of the present deficiencies in this field. The development of the field should be more detailed and in-depth from the following aspects: correct understanding of new concepts of hernia and abdominal wall surgery, establishment of hernia patient registration and quality control system, technological innovation and development of technical equipment, especially the expansion of robot surgical systems, materials science progression to hernia and abdominal wall surgery. Faced with this challenge, China is expected to achieve high-quality development in the field of hernia and abdominal surgery.</p>","PeriodicalId":23966,"journal":{"name":"Zhonghua wai ke za zhi [Chinese journal of surgery]","volume":"61 6","pages":"441-445"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9752957","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"[Progress of radical resection of pancreatic cancer].","authors":"Z H Jia, Y B Liu","doi":"10.3760/cma.j.cn112139-20220608-00259","DOIUrl":"10.3760/cma.j.cn112139-20220608-00259","url":null,"abstract":"<p><p>Pancreatic cancer is a malignant disease with an extremely poor prognosis. For now, radical resection is the only long-term survival approach. Therefore, for complete resection of different types of pancreatic neoplasms, scholars and surgeons have innovated and applied numerous surgical methods. Aiming at various situations, a large amout of methods and principles have been suggested. Unresectable neoplasms have been challenged day by day. Meanwhile, with the progression of technology, minimally invasive techniques have been applied to resection of pancreatic neoplasms. This article mainly reviews the innovation of surgical methods and technology in radical surgery of pancreatic cancer in recent years.</p>","PeriodicalId":23966,"journal":{"name":"Zhonghua wai ke za zhi [Chinese journal of surgery]","volume":"61 4","pages":"344-348"},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9905489","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
J H Zhang, R Q Liu, Y Gao, H W Yao, Y C Yang, Z T Zhang, Y Lu
{"title":"[Fortify clinical advantages and promote innovative development: comparison of the Chinese Colorectal Cancer Surgery Database with foreign databases].","authors":"J H Zhang, R Q Liu, Y Gao, H W Yao, Y C Yang, Z T Zhang, Y Lu","doi":"10.3760/cma.j.cn112139-20221113-00480","DOIUrl":"https://doi.org/10.3760/cma.j.cn112139-20221113-00480","url":null,"abstract":"<p><p>With the continuous development of evidence-based medicine, increasing attention has been paid to the construction of a large medical database to ensure a source of high quality real-world data. The Chinese Medical Association Colorectal Surgery Group created the Chinese Colorectal Cancer Surgery Database (CCCD), whose objective is to promote the development of colorectal surgery and improve patient prognosis with evidence-based medicine theory. Compared to major databases around the world, CCCD contains more comprehensive information on colorectal cancer surgical cases, recording the main epidemiological characteristics and detailed surgical information, but perioperative treatment data still need to be strengthened. It is necessary to continuously expand the coverage, enrich perioperative data and strengthen data, quality control. In the future, CCCD is expected to play a role in promoting homogenization of medical services, promoting smooth and effective graded diagnosis and treatment, giving full role to the characteristics of each center to achieve integrated development, and connecting real-world data and artificial intelligence.</p>","PeriodicalId":23966,"journal":{"name":"Zhonghua wai ke za zhi [Chinese journal of surgery]","volume":"61 5","pages":"362-367"},"PeriodicalIF":0.0,"publicationDate":"2023-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9200496","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}