Chronic Atrophic Gastritis

• China Academy of Chinese Medical Sciences — Beijing, Beijing Municipality, China
• Beijing Anzhen Hospital, Capital Medical University — Beijing, Beijing Municipality, China
• Hengshui Hospital of Traditional Chinese Medicine — Hengshui, Hebei, China
• Liyang Hospital of Chinese Medicine — Changzhou, Jiangsu, China

• Hangzhou TCM Hospital of Zhejiang Chinese Medical University (Hangzhou Hospital of Traditional Chinese Medicine) — Hangzhou, Zhejiang, China
• Hangzhou First People's Hospital — Hangzhou, Zhejiang, China
• The Third Affiliated Hospital of Zhejiang Chinese Medicinal University — Hangzhou, Zhejiang, China

Not specified

• Beijing Hospital of Traditional Chinese Medicine Affiliated to Capital Medical University — Beijing, China
• Wangjing Hospital of China Academy of Chinese Medical Sciences — Beijing, China
• Xiyuan Hospital of China Academy of Chinese Medical Sciences — Beijing, China
• Guangdong Provincial TCM Hospital — Guangzhou, China

• Royal Liverpool University Hospital — Liverpool, United Kingdom

• Hospital Regional de Occidente — Santa Rosa de Copán, Honduras
• University of Puerto Rico — San Juan, Puerto Rico

• Karolinska Institutet — Solna, Stockholm County, Sweden