| Authors: |
Chen Y; Department of Medical Records and Statistics, Beilun People's Hospital, Ningbo, China.; School of Public Health, Health Science Center, Ningbo University, Ningbo, China., Zhao Z; School of Public Health, Health Science Center, Ningbo University, Ningbo, China.; Medical Records Statistics Room, Affiliated People's Hospital of Ningbo University, Ningbo, China., Xu J; School of Public Health, Health Science Center, Ningbo University, Ningbo, China. xujin1@nbu.edu.cn., Ji L; Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Health Science Center, Ningbo University, Ningbo, China. jilindan@163.com., Cai J; Center for Reproductive Medicine, Women and Children's Hospital of Ningbo University, Ningbo, China. doctor_caijie@hotmail.com. |