Suh Min Kim, Seung-Kee Min, Daedo Park, Sang-Il Min, Jin-Young Jang, Sun-Whe Kim, Jongwon Ha, Sang Joon Kim
{"title":"Reconstruction of portal vein and superior mesenteric vein after extensive resection for pancreatic cancer.","authors":"Suh Min Kim, Seung-Kee Min, Daedo Park, Sang-Il Min, Jin-Young Jang, Sun-Whe Kim, Jongwon Ha, Sang Joon Kim","doi":"10.4174/jkss.2013.84.6.346","DOIUrl":"https://doi.org/10.4174/jkss.2013.84.6.346","url":null,"abstract":"<p><strong>Purpose: </strong>Tumor invasion to the portal vein (PV) or superior mesenteric vein (SMV) can be encountered during the surgery for pancreatic cancer. Venous reconstruction is required, but the optimal surgical methods and conduits remain in controversies.</p><p><strong>Methods: </strong>From January 2007 to July 2012, 16 venous reconstructions were performed during surgery for pancreatic cancer in 14 patients. We analyzed the methods, conduits, graft patency, and patient survival.</p><p><strong>Results: </strong>The involved veins were 14 SMVs and 2 PVs. The operative methods included resection and end-to-end anastomosis in 7 patients, wedge resection with venoplasty in 2 patients, bovine patch repair in 3 patients, and interposition graft with bovine patch in 1 patient. In one patient with a failed interposition graft with great saphenous vein (GSV), the SMV was reconstructed with a prosthetic interposition graft, which was revised with a spiral graft of GSV. Vascular morbidity occurred in 4 cases; occlusion of an interposition graft with GSV or polytetrafluoroethylene, segmental thrombosis and stenosis of the SMV after end-to-end anastomosis. Patency was maintained in patients with bovine patch angioplasty and spiral vein grafts. With mean follow-up of 9.8 months, the 6- and 12-month death-censored graft survival rates were both 81.3%.</p><p><strong>Conclusion: </strong>Many of the involved vein segments were repaired primarily. When tension-free anastomosis is impossible, the spiral grafts with GSV or bovine patch grafts are good options to overcome the size mismatch between autologous vein graft and portomesenteric veins. Further follow-up of these patients is needed to demonstrate long-term patency.</p>","PeriodicalId":49991,"journal":{"name":"Journal of the Korean Surgical Society","volume":"84 6","pages":"346-52"},"PeriodicalIF":0.0,"publicationDate":"2013-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4174/jkss.2013.84.6.346","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"31486551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Duck Hyoun Jeong, Min Geun Park, George Melich, Hyuk Hur, Byung Soh Min, Seung Hyuk Baik, Nam Kyu Kim
{"title":"Laparoscopic repair of parastomal and incisional hernias with a modified Sugarbaker technique.","authors":"Duck Hyoun Jeong, Min Geun Park, George Melich, Hyuk Hur, Byung Soh Min, Seung Hyuk Baik, Nam Kyu Kim","doi":"10.4174/jkss.2013.84.6.371","DOIUrl":"https://doi.org/10.4174/jkss.2013.84.6.371","url":null,"abstract":"<p><p>A parastomal hernia is the most common surgical complication following stoma formation. As the field of laparoscopic surgery advances, different laparoscopic approaches to repair of parastomal hernias have been developed. Recently, the Sugarbaker technique has been reported to have lower recurrence rates compared to keyhole techniques. As far as we know, the Sugarbaker technique has not yet been performed in Korea. We herein present a case report of perhaps the first laparoscopic parastomal hernia repair with a modified Sugarbaker technique to be successfully carried out in Korea. A 79-year-old woman, who underwent an abdominoperineal resection for an adenocarcinoma of the rectum 9 years ago, presented with a large parastomal and incisional hernias, and was treated with a laparoscopic repair with a modified Sugarbaker technique. Six months after surgery, follow-up with the patient has shown no evidence of recurrence.</p>","PeriodicalId":49991,"journal":{"name":"Journal of the Korean Surgical Society","volume":"84 6","pages":"371-6"},"PeriodicalIF":0.0,"publicationDate":"2013-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4174/jkss.2013.84.6.371","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"31577721","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Kyoung Sik Park, Kyu Eun Lee, Do Hoon Ku, Su-Jin Kim, Won Seo Park, Hoon Yub Kim, Mi Ra Kwon, Yeo-Kyu Youn
{"title":"Antiadhesive effect and safety of oxidized regenerated cellulose after thyroidectomy: a prospective, randomized controlled study.","authors":"Kyoung Sik Park, Kyu Eun Lee, Do Hoon Ku, Su-Jin Kim, Won Seo Park, Hoon Yub Kim, Mi Ra Kwon, Yeo-Kyu Youn","doi":"10.4174/jkss.2013.84.6.321","DOIUrl":"https://doi.org/10.4174/jkss.2013.84.6.321","url":null,"abstract":"<p><strong>Purpose: </strong>To evaluate the antiadhesive effects and safety of an oxidized regenerated cellulose (Interceed) after thyroidectomy.</p><p><strong>Methods: </strong>Seventy-six thyroidectomized patients were prospectively randomized into two groups with regard to the use of Interceed. We evaluated each group for their adhesive symptoms using four subjective and four objective items at the 2nd week, 3rd and 6th month after thyroidectomy. All patients were examined for vocal cord motility by indirect laryngoscope at each period.</p><p><strong>Results: </strong>Total adhesion scores at each postoperative follow-up period decreased with time, but were not significantly different in each group. The median score for swallowing discomfort for liquid was significantly lower in the Interceed group than in the control group 2 weeks after surgery. In addition, the severity of skin adhesion to the trachea was reduced in the Interceed group compared with the control group 6 months after surgery. During the study, there were no adverse effects or significant differences in postoperative complications between the groups.</p><p><strong>Conclusion: </strong>Interceed appeared to be safe and effective in improving neck discomfort at early postoperative periods and preventing skin adhesion to the trachea 6 months after thyroidectomy.</p>","PeriodicalId":49991,"journal":{"name":"Journal of the Korean Surgical Society","volume":"84 6","pages":"321-9"},"PeriodicalIF":0.0,"publicationDate":"2013-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4174/jkss.2013.84.6.321","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"31486548","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sang Jun Park, Jae Chol Hwang, Hong Rae Cho, Ho Jong Park, Sang Jin Kim, Bong Won Park
{"title":"Role of surgical treatment for peripheral arterial disease in endovascular era.","authors":"Sang Jun Park, Jae Chol Hwang, Hong Rae Cho, Ho Jong Park, Sang Jin Kim, Bong Won Park","doi":"10.4174/jkss.2013.84.6.353","DOIUrl":"https://doi.org/10.4174/jkss.2013.84.6.353","url":null,"abstract":"<p><strong>Purpose: </strong>The purpose of this study is to review the roll changes of surgical treatment for peripheral artery disease in endovascular era.</p><p><strong>Methods: </strong>One hundred and twelve surgically treated cases of peripheral artery disease at a single institution during the period from 2006 to 2011 were studied retrospectively. The cases were divided into two groups of different time periods, one before 2009 (surgical period group) and the other from 2009 onward (endovascular period group). We analyzed the type and location of surgery as well as clinical characteristics of patients and treatment results.</p><p><strong>Results: </strong>Fifty-three cases were for the surgical period group and 59 cases for the endovascular group. No difference in the demographic characteristics and the distribution of major atherosclerosis risk factors was found between the two groups. Additionally, the technical and functional success rate was similar in both groups. However, it is found that there were more acute cases in the endovascular period group than in the surgical period group. The number of cases in need of suprainguinal or below knee exposure was similar in both groups. In hybrid cases, suprainguinal or below knee exposures were more frequently needed during the former period than the latter period.</p><p><strong>Conclusion: </strong>The role of surgical treatment is currently in the process of changing. Surgical treatment seems to be a complementary alternative to endovascular treatment for chronic limb ischemia. However, it still seems to play a major role for acute limb ischemia.</p>","PeriodicalId":49991,"journal":{"name":"Journal of the Korean Surgical Society","volume":"84 6","pages":"353-9"},"PeriodicalIF":0.0,"publicationDate":"2013-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4174/jkss.2013.84.6.353","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"31486552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jin Kwon Lee, Seung Jin Kwag, Seong Taek Oh, Jun Gi Kim, Won Kyung Kang
{"title":"Adenocarcinoma arising from Meckel's diverticulum in the ileum with malrotation of the midgut.","authors":"Jin Kwon Lee, Seung Jin Kwag, Seong Taek Oh, Jun Gi Kim, Won Kyung Kang","doi":"10.4174/jkss.2013.84.6.367","DOIUrl":"https://doi.org/10.4174/jkss.2013.84.6.367","url":null,"abstract":"<p><p>Meckel's diverticulum (MD) is a true congenital diverticulum that is remnant by incomplete obliteration of the omphalomesenteric duct. It is the most common congenital anomaly of the gastrointestinal tract, with an estimated prevalence of 2% (0.3% to 3% in autopsy studies). About 90% of MD occurs within 100 cm of the ileocecal valve. A primary malignant tumor arising within an MD is extremely uncommon. Malignancies are reported to account for only 0.5% to 3.2% of the complications. Carcinoids are the most common malignant tumors occurring in MD. Adenocarcinomas are extremely uncommon and very poor prognosis has been reported. We report a case of radiographically diagnosed chronic inflammatory mass caused by adenocarcinoma arising from MD in the ileum with malrotation of the midgut incidentally discovered at exploration.</p>","PeriodicalId":49991,"journal":{"name":"Journal of the Korean Surgical Society","volume":"84 6","pages":"367-70"},"PeriodicalIF":0.0,"publicationDate":"2013-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4174/jkss.2013.84.6.367","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"31486554","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ibrahim Uygun, Mehmet Hanifi Okur, Bahattin Aydogdu, Mehmet Serif Arslan, Hasan Cimen, Selcuk Otcu
{"title":"Transumbilical scarless surgery with thoracic trocar: easy and low-cost.","authors":"Ibrahim Uygun, Mehmet Hanifi Okur, Bahattin Aydogdu, Mehmet Serif Arslan, Hasan Cimen, Selcuk Otcu","doi":"10.4174/jkss.2013.84.6.360","DOIUrl":"https://doi.org/10.4174/jkss.2013.84.6.360","url":null,"abstract":"<p><strong>Purpose: </strong>Single-site laparoscopic surgery has become increasingly common. We herein report an easy and low-cost thoracic trocar technique (TTT) for these types of procedures and recommend the simpler name \"transumbilical scarless surgery\" (TUSS) to minimize confusion in nomenclature.</p><p><strong>Methods: </strong>We retrospectively reviewed patients who underwent TUSS by TTT using a thoracic trocar and surgical glove in our hospital between November 2011 and November 2012. Operating time, postoperative stay, and complications were detailed.</p><p><strong>Results: </strong>A total of 101 TUSS by TTT were successfully performed, comprising appendectomy (n = 63), ovarian cyst excision (n = 7), splenectomy (n = 5), nephroureterectomy (n = 5), orchidopexy (n = 4), pyeloplasty (n = 3), nephrolithotomy (n = 2), orchiectomy (n = 2), varicocelectomy (n = 2), lymphangioma excision (n = 2), ureterectomy (n = 1), Morgagni diaphragmatic hernia repair (n = 1), ovarian detorsion (n = 1), antegrade continence enema (n = 1), intestinal resection anastomosis (n = 1), and intestinal duplication excision (n = 1). Kirschner wires were used for some organ traction. Nine patients required an additional port, but no major complications occurred. The postoperative stay (mean ± standard deviation) was 3.2 ± 1.4 days, and operating time was 58.9 ± 38.3 minutes.</p><p><strong>Conclusion: </strong>We recommend the simpler name of TUSS to minimize confusion in nomenclature for all transumbilical single-incision laparoendoscopic surgeries. TTT is an easy and low-cost TUSS technique.</p>","PeriodicalId":49991,"journal":{"name":"Journal of the Korean Surgical Society","volume":"84 6","pages":"360-6"},"PeriodicalIF":0.0,"publicationDate":"2013-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4174/jkss.2013.84.6.360","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"31486553","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Duck Hyoun Jeong, Han Beom Lee, Hyuk Hur, Byung Soh Min, Seung Hyuk Baik, Nam Kyu Kim
{"title":"Optimal timing of surgery after neoadjuvant chemoradiation therapy in locally advanced rectal cancer.","authors":"Duck Hyoun Jeong, Han Beom Lee, Hyuk Hur, Byung Soh Min, Seung Hyuk Baik, Nam Kyu Kim","doi":"10.4174/jkss.2013.84.6.338","DOIUrl":"https://doi.org/10.4174/jkss.2013.84.6.338","url":null,"abstract":"<p><strong>Purpose: </strong>The optimal time between neoadjuvant chemoradiotherapy (CRT) and surgery for rectal cancer has been debated. This study evaluated the influence of this interval on oncological outcomes.</p><p><strong>Methods: </strong>We compared postoperative complications, pathological downstaging, disease recurrence, and survival in patients with locally advanced rectal cancer who underwent surgical resection <8 weeks (group A, n = 105) to those who had surgery ≥8 weeks (group B, n = 48) after neoadjuvant CRT.</p><p><strong>Results: </strong>Of 153 patients, 117 (76.5%) were male and 36 (23.5%) were female. Mean age was 57.8 years (range, 28 to 79 years). There was no difference in the rate of sphincter preserving surgery between the two groups (group A, 82.7% vs. group B, 77.6%; P = 0.509). The longer interval group had decreased postoperative complications, although statistical significance was not reached (group A, 28.8% vs. group B, 14.3%; P = 0.068). A total of 111 (group A, 75 [71.4%] and group B, 36 [75%]) patients were downstaged and 26 (group A, 17 [16.2%] and group B, 9 [18%]) achieved pathological complete response (pCR). There was no significant difference in the pCR rate (P = 0.817). The longer interval group experienced significant improvement in the nodal (N) downstaging rate (group A, 46.7% vs. group B, 66.7%; P = 0.024). The local recurrence (P = 0.279), distant recurrence (P = 0.427), disease-free survival (P = 0.967), and overall survival (P = 0.825) rates were not significantly different.</p><p><strong>Conclusion: </strong>It is worth delaying surgical resection for 8 weeks or more after completion of CRT as it is safe and is associated with higher nodal downstaging rates.</p>","PeriodicalId":49991,"journal":{"name":"Journal of the Korean Surgical Society","volume":"84 6","pages":"338-45"},"PeriodicalIF":0.0,"publicationDate":"2013-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4174/jkss.2013.84.6.338","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"31486550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jina Chang, Anbok Lee, Jihyun Lee, Woosung Lim, Sun Hee Sung, Byung-In Moon
{"title":"Correlation between the molecular subtype of breast cancer and the in vitro adenosine triphosphate-based chemosensitivity assay.","authors":"Jina Chang, Anbok Lee, Jihyun Lee, Woosung Lim, Sun Hee Sung, Byung-In Moon","doi":"10.4174/jkss.2013.84.6.313","DOIUrl":"https://doi.org/10.4174/jkss.2013.84.6.313","url":null,"abstract":"<p><strong>Purpose: </strong>The empirical use of a chemotherapy regimen shows different results in individual breast cancer patient treatment. Recent studies showed the effectiveness of the adenosine triphosphate-based chemotherapy response assay (ATP-CRA). However, little is known about the correlation between chemosensitivity and breast cancer molecular subtypes. Therefore, we investigated whether the result of ATP-CRA is associated with a molecular subtype of breast cancer.</p><p><strong>Methods: </strong>Two hundred eighty-seven patients diagnosed with breast cancer and receiving ATP-CRA at Mokdong Hospital, Ewha Womans University between September 2007 and December 2010 were enrolled in this study. Hormone receptor status, HER2/neu expression, and results of chemosensitivity tests of the patients was analyzed.</p><p><strong>Results: </strong>In all of four subtypes, the combination of two agents showed significant higher mean cell death rate than a single agent. Within the breast cancer cell lines in this study, the range of chemosensitivity response was very wide and varied for each patient. For this reason, the molecular subtype of breast cancer is inconclusive in choosing an effective chemotherapeutic agent and in vitro chemosensitivity test, prior to therapy, could be a useful method for planning chemotherapy for each patient.</p><p><strong>Conclusion: </strong>Chemosensitivity response to anticancer agents was found to vary depending on the individual breast cancer patients. The molecular subtype of breast cancer is inconclusive to choose the effective chemotherapeutic agent and the in vitro chemosensitivity test, prior to therapy, could be more useful for planning chemotherapy for each patient.</p>","PeriodicalId":49991,"journal":{"name":"Journal of the Korean Surgical Society","volume":"84 6","pages":"313-20"},"PeriodicalIF":0.0,"publicationDate":"2013-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4174/jkss.2013.84.6.313","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"31486547","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Erratum: Significance of defecographic parameters in diagnosing pelvic floor dyssynergia","authors":"Moo-Kyung Seong, Tae-won Kim","doi":"10.4174/jkss.2013.84.6.377","DOIUrl":"https://doi.org/10.4174/jkss.2013.84.6.377","url":null,"abstract":"","PeriodicalId":49991,"journal":{"name":"Journal of the Korean Surgical Society","volume":"84 1","pages":"377 - 377"},"PeriodicalIF":0.0,"publicationDate":"2013-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4174/jkss.2013.84.6.377","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70361737","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}
Seung Pil Jung, Minkuk Kim, Kang Min Han, Jung-Han Kim, Jee Soo Kim, Seok Jin Nam, Jeoung Won Bae, Jeong Eon Lee
{"title":"Primary breast lymphoma: a single institution's experience.","authors":"Seung Pil Jung, Minkuk Kim, Kang Min Han, Jung-Han Kim, Jee Soo Kim, Seok Jin Nam, Jeoung Won Bae, Jeong Eon Lee","doi":"10.4174/jkss.2013.84.5.267","DOIUrl":"https://doi.org/10.4174/jkss.2013.84.5.267","url":null,"abstract":"<p><strong>Purpose: </strong>Primary breast lymphoma is a very rare disease, accounting for 0.4-0.5% of all breast malignancies. Due to the rarity, there are only limited reports of this disease in Korean women. In this reason, we report the experience of a single institution in Korea with primary breast lymphoma (PBL).</p><p><strong>Methods: </strong>We retrospectively reviewed the medical records of 9 patients with PBL and evaluated the clinicopathologic characteristics and treatment outcomes.</p><p><strong>Results: </strong>All nine patients were female and had diffuse large B-cell lymphoma (DLBL). The median age at diagnosis was 47.9 years and the median tumor size was 3.8 cm in diameter. The most common symptom was a painless palpable mass. Five patients were classified as stage IEA and four patients were IIEA according to the Ann Arbor staging system. Four patients underwent excisional biopsy and one patient underwent a lumpectomy with sentinel lymph node biopsy due to uncertain histology of the preoperative core needle biopsy. Nine patients received anthracycline containing combined chemotherapy; among them, five patients were treated with a rituximab containing regimen. Four patients received radiotherapy combined with chemotherapy. A complete response was achieved in eight patients. During the 44 months of the median follow-up period, three cases of relapse occurred, and among them, two patients died due to disease progression.</p><p><strong>Conclusion: </strong>Most PBLs are B-cell origin, with DLBL being the most common histologic type. A combined treatment modality has been known to have positive effects on prognosis, and surgery should be limited to a diagnostic purpose.</p>","PeriodicalId":49991,"journal":{"name":"Journal of the Korean Surgical Society","volume":"84 5","pages":"267-72"},"PeriodicalIF":0.0,"publicationDate":"2013-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4174/jkss.2013.84.5.267","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"31409419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}