1. Department of Clinical Laboratory Medicine The People Hospital of Qingyang City Qingyang China
2. Department of Infectious Disease The People Hospital of Qingyang City Qingyang China
3. Department of Obstetrics The People Hospital of Qingyang City Qingyang China
4. Department of Neonatology The People Hospital of Qingyang City Qingyang China
5. Department of Clinical Laboratory Medicine The First Affiliated Hospital of Sun Yat‐sen University Sun Yat‐sen University Guangzhou China