1. COVID-19 Study Group, General Hospital of Northern Theater Command, Shenyang, P.R. China
2. Department of Gastroenterology, General Hospital of Northern Theater Command, Shenyang, P.R. China
3. Postgraduate College, Liaoning University of Traditional Chinese Medicine, Shenyang, P.R. China
4. Department of Respiratory Medicine, General Hospital of Northern Theater Command, Shenyang, P.R. China
5. No.7 Department of Infectious Diseases, Wuhan Huoshenshan Hospital, Wuhan, P.R. China
6. Section of Medical Service, General Hospital of Northern Theater Command, Shenyang, P.R. China
7. Information Section of Medical Security Center, General Hospital of Northern Theater Command, Shenyang, P.R. China
8. COVID-19 Study Group, General Hospital of Northern Theater Command, No. 83 Wenhua Road, Shenyang, Liaoning Province 110840, P.R. China
9. Section of Medical Service, General Hospital of Northern Theater Command, Shenyang 110840, P.R. China
10. COVID-19 Study Group, General Hospital of Northern Theater Command, Shenyang 110840, P.R. China
11. Department of Gastroenterology, General Hospital of Northern Theater Command, No. 83 Wenhua Road, Shenyang, Liaoning Province 110840, P.R. China