1. Department of Gastroenterology West China Hospital Sichuan University Wuhou Chengdu P.R. China
2. Department of Clinical Research Management West China Hospital Sichuan University Wuhou Chengdu P.R. China
3. Clinical Trial Center West China Hospital Sichuan University Wuhou Chengdu P.R. China
4. NMPA Key Laboratory for Clinical Research and Evaluation of Innovative Drug West China Hospital Sichuan University Wuhou Chengdu P.R. China
5. Department of Forensic Toxicological Analysis West China School of Basic Medical Sciences & Forensic Medicine Sichuan University, Wuhou Chengdu P.R. China