1. Department of Laboratory, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China (mainland)
2. Department of Gastroenterology, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China (mainland)
3. Department of Gastroenterology, Jinan University Zhuhai Hospital, Zhuhai, Guangdong, China (mainland)
4. Department of Gastroenterology/Hepatology, The Cleveland Clinic Foundation, Cleveland, OH, USA