{"title":"[Considerations on hypoxia and altitude].","authors":"Luis Efrén Santos-Martínez","doi":"10.5281/zenodo.16748358","DOIUrl":"10.5281/zenodo.16748358","url":null,"abstract":"<p><p>Hypoxia associated with altitude is known as hypobaric hypoxia and it is related to the decrease in barometric pressure and inspired oxygen pressure; as they decrease, hypoxia increases. High altitude inhabitants acclimatise-adapt with morphological, physiological and genetic changes over generations. There are major differences between high altitude, moderate altitude and sea level. The characteristics of inhabitants of places with moderate altitude have been considered similar to those who live at sea level. However, hypobaric hypoxia is present and oxygenation is lower than at sea level, and it is still unknown what other changes may be caused by hypobaric hypoxia at this altitude.</p>","PeriodicalId":94200,"journal":{"name":"Revista medica del Instituto Mexicano del Seguro Social","volume":"63 5","pages":"e6725"},"PeriodicalIF":0.0,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12370291/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144857265","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}
Paloma Gradilla-Magaña, Antonio Cisneros-Barrios, Aldo Barajas-Ochoa, Julio Enrique Castañeda-Delgado, Cesar Ramos-Remus
{"title":"Impact of incorrect affiliations on the recognition of Mexican scientific institutions.","authors":"Paloma Gradilla-Magaña, Antonio Cisneros-Barrios, Aldo Barajas-Ochoa, Julio Enrique Castañeda-Delgado, Cesar Ramos-Remus","doi":"10.5281/zenodo.16748326","DOIUrl":"10.5281/zenodo.16748326","url":null,"abstract":"<p><strong>Background: </strong>Scientific productivity is a key parameter for measuring the effectiveness of healthcare institutions. Incorrect institutional names in affiliations can have legal implications and affect their visibility.</p><p><strong>Objective: </strong>To analyze the prevalence and impact of incorrect (apocryphal) institutional affiliations in Mexican scientific publications.</p><p><strong>Material and methods: </strong>A bibliometric analysis was conducted using PubMed and Scopus on publications from 20 Mexican institutions and universities. The affiliation loss ratio was calculated as the proportion of publications with apocryphal affiliations compared to those using the official name, and impact on institutional h-index was assessed to quantify visibility losses.</p><p><strong>Results: </strong>The average affiliation loss ratio was 13.92% (range: 2.1% to 66.5%), with highest rates for the Instituto Nacional de Salud Pública (66.5%), Instituto de Oftalmología Conde de Valenciana (62.6%), and Instituto Nacional de Medicina Genómica (32.9%). The analysis of h-index showed that correcting apocryphal affiliations could increase this metric by up to 6 points for some institutions, potentially improving international ranking positions.</p><p><strong>Conclusion: </strong>Incorrect institutional affiliations are common in Mexican scientific publications and significantly affect health institutions' visibility and international recognition. Prompt correction of this problem would improve Mexico's position in international rankings.</p>","PeriodicalId":94200,"journal":{"name":"Revista medica del Instituto Mexicano del Seguro Social","volume":"63 5","pages":"e6685"},"PeriodicalIF":0.0,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12377858/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144857272","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}
David Gutiérrez-Tapia, Miguel Ángel García-Padilla, Carlos Ríos-Melgarejo, Javier Medrano-Sánchez, Enrique Pulido-Contreras
{"title":"[Totally ultrasound guided percutaneous nephrolithotomy: An efficient and safe technique].","authors":"David Gutiérrez-Tapia, Miguel Ángel García-Padilla, Carlos Ríos-Melgarejo, Javier Medrano-Sánchez, Enrique Pulido-Contreras","doi":"10.5281/zenodo.16748335","DOIUrl":"10.5281/zenodo.16748335","url":null,"abstract":"<p><strong>Background: </strong>Percutaneous nephrolithotomy (PCNL) is the treatment for large and complex renal stones. Fluoroscopic guidance is the most used imaging method; however, radiation exposure is a significant concern. Recent studies have shown that ultrasound-guided PCNL is also feasible.</p><p><strong>Objective: </strong>To evaluate the safety of the two-step tract dilation technique using ultrasound guidance to avoid radiation exposure.</p><p><strong>Material and methods: </strong>Retrospective evaluation of data of patients treated between February 2019 and January 2023. Two groups were included based on tract dilation: Group 1 (G1): two-step totally ultrasound-guided dilation, and group 2 (G2): fluoroscopy-guided dilation.</p><p><strong>Results: </strong>100 patients were included, 50 in each group. Body mass index (31.7 vs. 28.7kg/m²; p = 0.002) and stone burden (10,935.69 vs. 5,460.86mm³; p = 0.006) were higher in G1; fluoroscopy was absent in the same group (0 vs. 29.4 sec; p < 0.005). Complications occurred in 13 patients in G1 and in 7 in G2 (p = 0.32); no complications grade 3b, 4 or 5 were observed in either group. The overall stone-free rate was 76% (74% vs. 78%; p = 0.81).</p><p><strong>Conclusions: </strong>Ultrasound-guided PCNL is a safe technique that avoids radiation exposure without compromising clinical outcomes.</p>","PeriodicalId":94200,"journal":{"name":"Revista medica del Instituto Mexicano del Seguro Social","volume":"63 5","pages":"e6701"},"PeriodicalIF":0.0,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12377859/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144857270","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":"[Primary testicular lymphoma with extranodal involvement in the stomach. Case report].","authors":"Huber Díaz-Fuentes","doi":"10.5281/zenodo.16748281","DOIUrl":"10.5281/zenodo.16748281","url":null,"abstract":"<p><strong>Background: </strong>Primary testicular lymphoma is a rare disease that usually occurs in men over 50 years of age. It is considered a highly aggressive disease with a poor prognosis due to the high rate of relapse in different extranodal sites. In this report, we present a case of primary testicular lymphoma with extranodal involvement in the stomach.</p><p><strong>Clinical case: </strong>57-year-old male patient with a right testicular enlargement of one month which was treated as right epididymitis-orchiditis without improvement, for which an ultrasound was requested with the finding of a tumor in the right testicle. He came to the National Medical Center's Oncology Hospital where a plain and contrast thoraco-abdominopelvic computed tomography scan was requested with no evidence of metastasis in the retroperitoneum and with negative tumor markers. Patient underwent a right radical orchiectomy via the inguinal route, with a pathology report of testicular lymphoma. The following postoperative day, the patient presented data of lower digestive tract bleeding, so a panendoscopy with biopsy was requested, finding a 6 cm bleeding gastric ulcer compatible with gastric lymphoma by immunohistochemistry.</p><p><strong>Conclusions: </strong>The early diagnosis of a probable testicular lymphoma is crucial, since, although germ cell tumors are the main etiology, in patients over 50 years of age there should always be suspicion of a testicular lymphoma that may benefit from chemotherapy treatment.</p>","PeriodicalId":94200,"journal":{"name":"Revista medica del Instituto Mexicano del Seguro Social","volume":"63 5","pages":"e6709"},"PeriodicalIF":0.0,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12380315/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144857268","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":"[Medical education and artificial intelligence: perspectives and ethical challenges].","authors":"Omar Chávez-Martínez, Leonardo Adriano Ragacini","doi":"10.5281/zenodo.16748310","DOIUrl":"10.5281/zenodo.16748310","url":null,"abstract":"<p><p>Artificial intelligence (AI) drives innovation in medical education by enabling personalized learning, instant feedback, and clinical simulations. However, it raises concerns such as loss of human skills, misinformation, and ethical issues. ChatGPT has gained prominence for its natural language generation capabilities, despite lacking real understanding. The aim of this article was to analyze the use of AI, particularly ChatGPT, in medical education, identifying its benefits, limitations, and ethical implications, which is why a qualitative integrative review was conducted through a systematic search in PubMed (2020-2025), using MeSH descriptors related to artificial intelligence and medical education. A total of 37 open-access, full-text articles in English were included. The information was analyzed and synthesized using a thematic approach, organized into 4 categories: pedagogical applications, benefits, challenges, and ethical recommendations, thanks to which we had these results: AI supports clinical simulations, personalized learning, and equitable access. Benefits include enhanced clinical reasoning and autonomous learning. Challenges remain, such as bias, data privacy, and misinformation. Five pillars for integration are proposed, along with a professional classification into consumers, translators, and developers. Digital curation emerges as a key element to ensure quality and reliability. We conclude that AI can transform medical education if implemented ethically, critically, and with a human-centered approach.</p>","PeriodicalId":94200,"journal":{"name":"Revista medica del Instituto Mexicano del Seguro Social","volume":"63 5","pages":"e6736"},"PeriodicalIF":0.0,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12377860/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144857267","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}
Manlio Fabio Lara-Duck, Juan Rosales-Martínez, Netzahualcoyotl Mayek-Pérez
{"title":"[Wolff-Parkinson-White syndrome due to cocaine use: a case report].","authors":"Manlio Fabio Lara-Duck, Juan Rosales-Martínez, Netzahualcoyotl Mayek-Pérez","doi":"10.5281/zenodo.16748296","DOIUrl":"10.5281/zenodo.16748296","url":null,"abstract":"<p><strong>Background: </strong>Wolff-Parkinson-White syndrome (WPWS) causes an accessory pathway between the atria and ventricles, in parallel with the atrioventricular node and the bundle of His; it causes a \"short circuit\" that deregulates the physiological pacing and causes tachycardia. A case of WPWS is described in a patient with cocaine, alcohol, and tobacco consumption.</p><p><strong>Clinical case: </strong>A 34-year-old man with a regular history of cocaine, alcohol, and tobacco use for 14 years presented with paroxysmal palpitations, chest pain, and shortness of breath. ECG 1 revealed supraventricular tachycardia with delta waves and a short P-R interval; ECG 2 revealed reversal of the tachycardia without delta waves and inverted T waves in lead 1, aVR, and aVL, and a short P-R interval; ECG 3 revealed sinus rhythm, 90 bpm, and inverted T waves in lead 3, aVR, and v1. TTE showed a normal left ventricle; a normal LVEF, greater than 50% (Simpson's method); and no stenosis or regurgitation in the mitral, tricuspid, and mitral valves. 24-hour Holter monitoring revealed non-sustained paroxysmal supraventricular tachycardia, with a narrow QRS complex, a short P-R, interval of 122 bpm, and T wave inversion during paroxysm. Reversal of paroxysm maintained a short P-R and normal T waves.</p><p><strong>Conclusions: </strong>Upon reversal of the patient's supraventricular tachycardia paroxysms, his T waves corrected (positive T waves). The inverted T waves were due to WPWS, triggered by cocaine, alcohol, and tobacco use, and possibly related to myocardial ischemic involvement.</p>","PeriodicalId":94200,"journal":{"name":"Revista medica del Instituto Mexicano del Seguro Social","volume":"63 5","pages":"e6679"},"PeriodicalIF":0.0,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12380318/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144857271","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}
Miroslava López-Zepeda, Miguel Ángel García-Padilla, Carlos Ríos-Melgarejo, Javier Medrano-Sánchez, Enrique Pulido-Contreras
{"title":"[High-flow priapism without a history of trauma: A case report].","authors":"Miroslava López-Zepeda, Miguel Ángel García-Padilla, Carlos Ríos-Melgarejo, Javier Medrano-Sánchez, Enrique Pulido-Contreras","doi":"10.5281/zenodo.16748287","DOIUrl":"10.5281/zenodo.16748287","url":null,"abstract":"<p><strong>Background: </strong>Priapism is a partial or total erection which lasts more than 4 hours that occurs in the absence of sexual stimulation. It has an incidence rate of 1.5 per 100,000 people. It is classified as ischemic (low-flow) or non-ischemic (high-flow). Non-ischemic priapism is an atypical presentation characterized by a non-rigid erection without pain, and it is frequently associated with trauma. Our objective is to present this clinical case to highlight the importance of correctly classifying priapism types to provide appropriate treatment and avoid complications.</p><p><strong>Clinic case: </strong>A 37-year-old male with no history of chronic degenerative diseases. Patient's condition began with a morning erection followed by sexual activity. Patient came to the Emergency Room 5 days later since the erection persisted, which he reported was pain-free. He denied recent trauma or the use of erectile stimulants. High-flow priapism was diagnosed via Doppler ultrasound. Selective angioembolization was performed, achieving an immediate detumescence of 40%.</p><p><strong>Conclusion: </strong>Corporal blood gas testing is essential in the initial evaluation of any patient presenting with priapism. For high-flow priapism, conservative management should first be attempted; if priapism persists, embolization of the affected pudendal artery can be offered.</p>","PeriodicalId":94200,"journal":{"name":"Revista medica del Instituto Mexicano del Seguro Social","volume":"63 5","pages":"e6707"},"PeriodicalIF":0.0,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12380316/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144857266","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}
Ma Del Pilar Pacheco-Zavala, Raúl Hernández-Ordóñez, Rafal Ludwik Smolinski-Kurek
{"title":"[Murals, medicine, and memory: The cultural heritage of IMSS as a generator of institutional identity].","authors":"Ma Del Pilar Pacheco-Zavala, Raúl Hernández-Ordóñez, Rafal Ludwik Smolinski-Kurek","doi":"10.5281/zenodo.16748229","DOIUrl":"10.5281/zenodo.16748229","url":null,"abstract":"<p><p>The Mexican Institute for Social Security (IMSS) safeguards one of the most significant public art collections in Mexico, composed of murals, sculptures, and architectural works located throughout its medical, administrative, and social facilities across the country. This artistic heritage not only holds aesthetic value but also serves as a visual and symbolic expression of the values that gave rise to the Institute, as well as those of Latin American social medicine. Throughout its historical trajectory, IMSS has used institutional art as an instrument for building a collective identity, embodying principles such as solidarity, equity, the right to health, and social justice, principles that have contributed to strengthening a sense of belonging. This article presents a documentary and reflective review of the role of artistic heritage in the construction of institutional identity, with emphasis on its historical, symbolic, and social functions. It reflects on the importance of reinterpreting this heritage from a contemporary perspective that promotes its dissemination, appropriation, and use in strategies aimed at humanization, as well as its pedagogical, communal, and symbolic roles. The article concludes that preserving, promoting, and making visible IMSS's artistic heritage is a key strategy for consolidating an institutional identity aligned with the humanistic principles that shaped Mexico's social security system.</p>","PeriodicalId":94200,"journal":{"name":"Revista medica del Instituto Mexicano del Seguro Social","volume":"63 5","pages":"e6710"},"PeriodicalIF":0.0,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12384528/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144860035","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}
Berenice Chávez-Reyes, Fryda Medina-Rodríguez, José Luis Guzmán-Benítez, Saira Alejandra Chávez-Castro, Salomón Torres-Atrián, Hermelinda Hernández-Amaro, Andrea Fernanda Méndez-Cano, Dulce María Flores-Ramos, Álvaro David Sosa-Sosa, Ana Perla Domínguez-Álvarez, David Santiago-Germán, Rubén Torres-González
{"title":"[Strategy for improving the distress level in healthcare workers].","authors":"Berenice Chávez-Reyes, Fryda Medina-Rodríguez, José Luis Guzmán-Benítez, Saira Alejandra Chávez-Castro, Salomón Torres-Atrián, Hermelinda Hernández-Amaro, Andrea Fernanda Méndez-Cano, Dulce María Flores-Ramos, Álvaro David Sosa-Sosa, Ana Perla Domínguez-Álvarez, David Santiago-Germán, Rubén Torres-González","doi":"10.5281/zenodo.16748348","DOIUrl":"10.5281/zenodo.16748348","url":null,"abstract":"<p><strong>Background: </strong>Healthcare workers are at higher risk of work-related issues due to constant exposure to distress, which has an impact on their well-being and performance.</p><p><strong>Objective: </strong>To evaluate distress levels and causes of emotional discomfort among healthcare workers before and after a sensitization workshop.</p><p><strong>Material and methods: </strong>Observational, longitudinal, analytical, and retrospective study based on assessments conducted by SPPSTIMSS on healthcare workers who participated in the Mind, Body, and Emotions workshop from August 1, 2022, to August 21, 2023, at the Hospital of Traumatology, Orthopedics, and Rehabilitation \"Dr. Victorio de la Fuente Narváez.\" Variables analyzed included age, gender, workplace, shift, employment category, distress levels, causes of emotional discomfort, and intervention latency, using the Distress Thermometer. The protocol was approved by the Health Ethics and Research Committee (R-2023-3401-076).</p><p><strong>Results: </strong>Data from 101 participants with complete records were analyzed (mean age: 38.8 ± 8.7 years, 71.2% were females). Distress levels showed a significant reduction (6.2 ± 2.8 vs. 4.7 ± 2.9, p = 0.0002), with an intervention latency of 6.3 ± 4.8 months. Causes of emotional discomfort included practical (90%), physical (88.1%), emotional (86.1%), family-related (52.4%), and spiritual (9.9%) issues.</p><p><strong>Conclusions: </strong>Participation of healthcare workers in the sensitization workshop significantly reduced self-perceived distress levels.</p>","PeriodicalId":94200,"journal":{"name":"Revista medica del Instituto Mexicano del Seguro Social","volume":"63 5","pages":"e6681"},"PeriodicalIF":0.0,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12372845/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144857269","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}
Clara Esperanza Santacruz-Tinoco, Julio Elías Alvarado-Yaah, Yu Mei Anguiano-Hernández, Bernardo Martínez-Miguel, David Alejandro Cabrera-Gaytán, Leticia Chávez-Navarro
{"title":"[Brief history of laboratory-based epidemiological surveillance in the Mexican Institute for Social Security].","authors":"Clara Esperanza Santacruz-Tinoco, Julio Elías Alvarado-Yaah, Yu Mei Anguiano-Hernández, Bernardo Martínez-Miguel, David Alejandro Cabrera-Gaytán, Leticia Chávez-Navarro","doi":"10.5281/zenodo.16748267","DOIUrl":"10.5281/zenodo.16748267","url":null,"abstract":"<p><p>Epidemiological surveillance of communicable diseases has had a cross-cutting role that has contributed to scientific advancement, knowledge generation, and, above all, to organizing and focusing public health and medical care activities in the country. We refer to laboratory-based epidemiological surveillance. In this regard, the Mexican Institute for Social Security (IMSS according to its initials in Spanish) has not fallen short of expectations with the creation of a network of laboratories for laboratory-based epidemiological surveillance in different states, with recognition of their technical competence by the Ministry of Health. These laboratories were created following the need arising from the pandemic emergency of the influenza virus in 2009 and year after year their diagnostic capacity has expanded, extending their diagnostic reach to various vector-borne pathologies and vaccine-preventable diseases that are important in Mexico. This document summarizes the main events, challenges, and successes experienced by the Institute's network of epidemiological surveillance laboratories since its creation. The initial executor is the operational staff of the medical unit, who are those in direct contact with the sick person.</p>","PeriodicalId":94200,"journal":{"name":"Revista medica del Instituto Mexicano del Seguro Social","volume":"63 5","pages":"e6698"},"PeriodicalIF":0.0,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12384530/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144860034","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}