1 Department of Gastroenterology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China.
2 The Second School of Clinical Medicine, Southern Medical University, Guangzhou, China.
3 Department of Stomatology, Zhuzhou Central Hospital, Xiangya School of Medicine, Central South University, Zhuzhou, China.
4 Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Medical Sciences Division, University of Oxford, Oxford, United Kingdom.
5 School of Medicine and Institute for Life Sciences, South China University of Technology, Guangzhou, China.