Division of Gastroenterology, Second Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510120, China;
Division of Gastroenterology, Second Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510120, China;
Division of Gastroenterology, Second Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510120, China;
Division of Gastroenterology, Second Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510120, China;
Division of Gastroenterology, Second Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510120, China;
Division of Gastroenterology, Second Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510120, China;
Division of Gastroenterology, Second Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510120, China;
Division of Gastroenterology, Second Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510120, China;
Division of Gastroenterology, Second Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510120, China;
Division of Gastroenterology, Second Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510120, China;
severe acute respiratory syndrome; coronavirus; diagnosis;