Gastritis

• Northwestern University — Chicago, Illinois, United States
• The National Institutes of Health — Bethesda, Maryland, United States
• University of Utah — Salt Lake City, Utah, United States

• Faculty of Medicine Siriraj Hospital, Mahidol University — Bangkok Noi, Bangkok, Thailand

• Xijing Hosipital of Digestive Disease — Xi'an, Shaanxi, China

• Clinical Center of Serbia - Clinic for Gastroenterohepatology — Belgrade, Central Serbia, Serbia
• Zvezdara Medical Center - Department of Gastroenterology — Belgrade, Central Serbia, Serbia

• Xijing Hosipital of Digestive Disease — Xi'an, Shaanxi, China

• Masong Kim Internal Medicine Clinic — Seoul, South Korea

• Guangdong Provincial Hospital of Traditional Chinese Medicine — Guangzhou, Guangdong, China
• Second Affiliated Hospital of Guangzhou Medical University — Guangzhou, Guangdong, China
• Nanfang Hospital, Southern Medical University — Guangzhou, Guangdong, China
• Renhua People's Hospital — Shaoguan, Guangdong, China

• Nanfang Hospital, Southern Medical University — Guangzhou, Guangdong, China

• Seoul National University Hospital, Seoul, — Seoul, South Korea

Not specified