1. Department of Nuclear Medicine and Institute of Anesthesiology and Pain, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei 442000, P.R. China
2. Department of General Surgery II, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei 442000, P.R. China
3. Department of Infection Control, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei 442000, P.R. China