[1] Miami Canc Inst, Div Hepatobiliary & Pancreas Surg, Miami, FL 33176 USA
[2] Bonorino Udaondo Hosp, Dept Gastroenterol, Buenos Aires, Argentina
[3] Bolivian Japanese Bolivian Gastroenterol Inst, Dept Gastroenterol, Cochabamba, Bolivia
[4] Gastro Hlth, Miami Canc Inst, Pancreat Dis Ctr, Intervent Endoscopy, Miami, FL USA
[5] Peruvian Univ Appl Sci, Edgardo Rebagliati Martins Natl Hosp, Anglo Amer Clin, Gastroenterol Unit, Lima, Peru
[6] Peruvian Univ Appl Sci, Sch Med, Lima, Peru
[7] Univ Chile Clin Hosp, Gastroenterol Sect & Crit Care Unit, Santiago, Chile
[8] Reg Hosp High Specialty Bajio, Dept Dis Digest Tract, Gen Surg, Guanajuato, Mexico
[9] Hosp Puerto Montt, Digest Endoscopy Unit, Puerto Montt, Chile
[10] Univ San Sebastian, San Sebastian, Chile
[11] Italian Hosp Buenos Aires, Dept Gastroenterol, Buenos Aires, Argentina
[12] Univ Nacl Autonoma Mexico, Sch Med, Res Div, Mexico City, Mexico
[13] Natl Inst Med Sci & Nutr Salvador Zubiran, Dept Gastroenterol, Mexico City, Mexico
[14] Unigastro, Digest Endoscopy Unit, La Paz, Bolivia
[15] Hlth & Biomed Res Inst Alicante ISABIAL, Alicante, Spain
[16] Inst Salud Carlos III, CIBERehd, Madrid, Spain
[17] Univ Barcelona, Hosp Clin, Gastroenterol Dept, CIBERehd IDIBAPS, Barcelona, Spain
[18] Dr Balmis Gen Univ Hosp, Dept Surg, Alicante, Spain
[19] Dr Balmis Gen Univ Hosp, Dept Gastroenterol, Alicante, Spain