Affiliation: | 1.Department of Infectious Disease, The First Hospital of Qinhuangdao, Qinhuangdao, Hebei, 066000, China ;2.Gastroscopy Room, The Central Hospital of Chengde, Chengde, Hebei, 067000, China ;3.Department of Gynecology, The First Hospital of Qinhuangdao, Qinhuangdao, Hebei, 066000, China ;4.B-ultrasound Room, The First Hospital of Qinhuangdao, Qinhuangdao, Hebei, 066000, China ;5.Pediatric Intensive Care Unit, The First Hospital of Qinhuangdao, #258, Wenhua Road, Qinhuangdao, Hebei, 066000, China ; |