[1] Emura Ctr LatinoAmer, Adv Gastrointestinal Endoscopy, Calle 134 7-83,Consultorio 341, Bogota, Colombia
[2] La Sabana Univ, Div Gastroenterol, Cundinamarca, Colombia
[3] Emura Fdn Promot Canc Res, Bogota, Colombia
[4] Vet Affairs Med Ctr, Kansas City, KS USA
[5] Univ Kansas, Sch Med, Kansas City, KS USA
[6] Hosp Clin & Mater Contorno, Endoscopy Div, Belo Horizonte, MG, Brazil
[7] Fed Univets Minas Gerais, Med Sch, Alfa Inst Gastroenterol, Belo Horizonte, MG, Brazil
[8] Gedyt Gastroenterol & Diagnost & Therapeut Endosc, Buenos Aires, DF, Argentina
[9] Nottingham Univ Hosp NHS Trust, NIHR Nottingham Biomed Res Ctr, Dept Gastroenterol, Nottingham, England
[10] Univ Nottingham, Nottingham, England
[11] Jikei Univ, Sch Med, Dept Endoscopy, Tokyo, Japan
[12] Jikei Univ, Sch Med, Dept Innovat Intervent Endoscopy Res, Tokyo, Japan
[13] St Marianna Univ, Div Gastroenterol, Tokyo, Kanagawa, Japan
[14] Nagoya Univ, Grad Sch Med, Dept Gastroenterol & Hepatol, Nagoya, Aichi, Japan
[15] Clin Los Andes Univ, Army Hosp Santiago, Div Gastroenterol & Endoscopy, Santiago, Chile
[16] Pontificia Catholic Univ, Med Sch, Santiago, Chile
[17] Angeles Pedregal Hosp, Mexico City, DF, Mexico
[18] Chinese Univ Hong Kong, Dept Surg, Div Upper GI & Metab Surg, Hong Kong, Peoples R China