1. Infection Management Office, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, 250014 Shandong, China
2. Department of Digestive Endoscopic Diagnosis and Treatment, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, 250014 Shandong, China
3. Health Care West Ward 15, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, 250014 Shandong, China
4. Department of Infectious Diseases, Yantai Penglai Hospital of Traditional Chinese Medicine, Penglai, 265600 Shandong, China
5. Haemodialysis Room, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, 250014 Shandong, China