1. Department of Infectious Disease Prevention and Control, Disease Prevention and Control Center of Daishan County, Zhejiang, China.
2. Department of Infectious Disease Prevention and Control, Disease Prevention and Control Center of Dinghai Distinct, Zhejiang, China.
3. Department of Infectious Disease, The Affiliated Zhoushan Hospital of Wenzhou Medical University, Zhoushan, China.
4. Changzhou Maternity and Child Health Care Hospital, Changzhou Medical Center, Nanjing Medical University, Changzhou, China.
5. State Key Laboratory of Reproductive Medicine, Center for Global Health, Nanjing Medical University, Nanjing, China.