Esophagogastroduodenoscopy

• Hospital Almater — Mexicali, Estado de Baja California, Mexico
• Hospital General de Mexicali — Mexicali, Estado de Baja California, Mexico

Not specified

• Aksaray University — Aksaray, Turkey (Türkiye)

• Korea University Anam Hospital — Seoul, Seoung-buk Gu, South Korea

• Binzhou Medical University Hospital — Binzhou, Shandong, China
• Linyi People's Hospital — Dezhou, Shandong, China
• Central Hospital of Shengli Oilfield — Dongying, Shandong, China
• Qilu Hospital of Shandong University — Jinan, Shandong, China

• Erasmus Medical Center — Rotterdam, South Holland, Netherlands
• Oslo University Hospital - Rikshospitalet — Oslo, Norway

• Odense University Hospital — Odense, Region Syddanmark, Denmark

• Department of Gastroenterology, Qilu Hospital, Shandong University — Jinan, Shandong, China

• Univeristy of South Alabama — Mobile, Alabama, United States
• University of Southern California — Los Angeles, California, United States
• University of California Irvine — Orange, California, United States
• Mayo Clinic — Jacksonville, Florida, United States

• Cleveland Clinic Florida — Weston, Florida, United States