1. From the Department of Obstetrics, Gynecology and Reproductive Sciences, Magee-Womens Research Institute (H.L., Y.O., E.S., T.C., Y.S.), University of Pittsburgh, PA
2. Reproductive Department of Xiangya Hospital, Central South University, Changsha, Hunan, China (H.L.)
3. The Third Xiangya Hospital, Central South University, Changsha, Hunan, China (H.L.)
4. Department of Laboratory Medicine and Pathobiology, Mount Sinai Hospital, University of Toronto, Ontario, Canada (W.T.P.).
5. Department of Microbiology and Molecular Genetics (Y.S.), University of Pittsburgh, PA