1 Department of Gastroenterology & Hepatology, West China Hospital, Sichuan University, Chengdu, Sichuan, China.
2 Department of Gastroenterology & Hepatology, COVID-19 Medical Team (Hubei), West China Hospital, Sichuan University, Chengdu, Sichuan, China; COVID-19 Medical Team (Hubei), West China Hospital, East Hospital of Renmin Hospital of Wuhan University, Wuhan, Hubei, China.