[1] China Med Univ, Shengjing Hosp, Endoscopy Ctr, Shenyang, Liaoning, Peoples R China
[2] Chinese Univ Hong Kong, Dept Med & Therapeut, Hong Kong, Peoples R China
[3] Chinese Univ Hong Kong, Dept Surg, Hong Kong, Peoples R China
[4] Harvard Med Sch, Dept Gastroenterol, Massachusetts Gen Hosp, Boston, MA 02115 USA
[5] Brigham & Womens Hosp, Div Gastroenterol Hepatol & Endoscopy, 75 Francis St, Boston, MA 02115 USA
[6] Univ Utah, Sch Med, Div Gastroenterol & Hepatol, Huntsman Canc Ctr, Salt Lake City, UT USA
[7] Wake Forest Sch Med, Dept Gastroenterol, Winston Salem, NC 27101 USA
[8] Digest Associates Houston, Houston, TX USA
[9] Univ Texas Houston, Anderson Canc Ctr, Houston, TX USA
[10] Columbia Univ, Med Ctr, New York, NY USA
[11] Royal Prince Alfred Hosp, Camperdown, NSW, Australia
[12] Lyell McEwin Hosp, Elizabeth Vale, Australia
[13] Royal Adelaide Hosp, Dept Gastroenterol, Adelaide, SA, Australia
[14] CHU Montreal, Montreal, PQ, Canada
[15] Inst Paoli Calmettes, Endoscop Unit, Marseille, France
[16] Trocadero Clin, Paris, France
[17] Mahidol Univ, Siriraj Hosp, Bangkok, Thailand
[18] Rajavithi Hosp, Bangkok, Thailand
[19] Tel Aviv Sourasky Med Ctr, Tel Aviv, Israel
[20] Kitasato Univ, East Hosp, Dept Gastroenterol, Sagamihara, Kanagawa, Japan
[21] Teine Kenjinkai Hosp, Ctr Gastroenterol, Sapporo, Hokkaido, Japan
[22] Tokyo Med Univ, Dept Gastroenterol & Hepatol, Tokyo, Japan
[23] Fukushima Med Univ, Aizu Med Ctr, Aizu Wakamatsu, Fukushima, Japan
[24] Natl Canc Inst, Mexico City, DF, Mexico
[25] Jaswant Rai Special Hosp, Dept Gastroenterol, Meerut, Uttar Pradesh, India
[26] Sanjay Gandhi Postgrad Inst Med Sci, Dept Gastroenterol, Lucknow, Uttar Pradesh, India
[27] All India Inst Med Sci, Dept Gastroenterol, New Delhi, India
[28] Postgrad Inst Med Educ & Res, Dept Gastroenterol, Chandigarh, India
[29] SL Raheja Hosp, Dept Gastroenterol & Endoscopy, Mumbai, Maharashtra, India
[30] Asian Inst Gastroenterol, Hyderabad, Telangana, India
[31] Rawalpindi Med Coll, Rawalpindi, Pakistan
[32] Amer Univ Beirut, Med Ctr, Beirut, Lebanon
[33] Natl Univ Singapore, Singapore, Singapore
[34] Changi Gen Hosp, Dept Gastroenterol, Singapore, Singapore
[35] Changi Gen Hosp, Dept Hepatol, Singapore, Singapore
[36] Univ Caldas, Surg Clin Gastroenterol, Manizales, Colombia
[37] Clin Reina Sofia, Bogota, Colombia
[38] Humanitas Res Hosp, Digest Endoscopy Unit, Milan, Italy
[39] Univ Bologna, Gastroenterol Unit, Dept Med & Surg Sci, Bologna, Italy
[40] Catholic Univ, Digest Endoscopy Unit, Rome, Italy
[41] Caritas Krankenhaus, Dept Med, Uhlandstr 7, D-97980 Bad Mergentheim, Germany
[42] Hosp Meiningen, Dept Med, Thuringia, Germany
[43] Cairo Univ, Dept Internal Med, Fac Med, Cairo, Egypt
[44] Cairo Univ, Dept Internal Med & Gastroenterol, Cairo, Egypt
[45] Erasmus MC Univ, Med Ctr Rotterdam, Rotterdam, Netherlands
[46] Participants Nucleus Endoscopy Brazilian Soc Dige, Sao Paulo, Brazil
[47] Ana Costa Hosp, Dept Surg, Sao Paulo, Brazil
[48] Univ Copenhagen, Copenhagen Univ Hosp, Gastro Unit, Div Endoscopy, Copenhagen, Denmark
[49] Copenhagen Univ Hosp, Dept Surg, GastroUnit, Copenhagen, Denmark
[50] Univ Hosp Santiago de Compostela, Dept Gastroenterol & Hepatol, Santiago De Compostela, Spain