1. Department of gynecology, Heping Hospital affiliated to Changzhi Medical College, Changzhi, Shanxi 046000, P.R. China;
2. Central Laboratory, Changzhi Medical College, Changzhi, Shanxi 046000, P.R. China
3. Department of Hematological, Heping Hospital affiliated to Changzhi Medical College, Changzhi, Shanxi 046000, P.R. China
4. Department of Information, Heping Hospital affiliated to Changzhi Medical College, Changzhi, Shanxi 046000, P.R. China
5. Department of Reproductive heredity, Heping Hospital affiliated to Changzhi Medical College, Changzhi, Shanxi 046000, P.R. China