Acute Gastritis

Not specified

• Ajou University Medical Center, Division of Gastroenterology — Suwon, Gyeonggi-do, South Korea

• Hanyang University Medical Center — Seoul, South Korea

• Yonsei University Health System, Severance Hospital, IRB — Seoul, South Korea

• Chung-Ang University Hospital — Seoul, South Korea

• Korea University Guro Hospital — Seoul, South Korea

• Inje University Busanpaik hospital — Busan, Busangjin, South Korea
• Chonbuk National University Hospital — Jeonju, Deokjin-gu, South Korea
• Chonnam National University Hospital — Guangju, Dong-gu, South Korea
• Wonju Severance Christian Hospital — Wŏnju, Ilsan-ro, South Korea

• Chinese People's Liberation Army General Hospital of Beijing Military — Beijing, China
• Chongqing First People's Hospital — Chongqing, China
• The Second Affiliated Hospital of Chongqing Medical University — Chongqing, China
• Wuhan Union Hospital — Hubei, China