1. Department of Nosocomial Infection Management, Maternal & Child Branch, Ruian People's Hospital, the Third Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325200, China
2. Department of Neonatology, Maternal & Child Branch Hospital of Ruian People's Hospital, the Third Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325200, China
3. Department of Clinical Laboratory, Maternal & Child Hospital, Ruian People's Hospital, the Third Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325200, China