Affiliation: | 1. Department of Obstetrics and Gynecology, Center for Reproductive Medicine, Anhui Provincial Hospital Affiliated to Anhui Medical University, Hefei, Anhui, China;2. Reproductive Medicine, Department of Obstetrics and Gynecology, Chicago Medical School at Rosalind Franklin University of Medicine and Science, Vernon Hills, IL, USA;3. Department of Microbiology and Immunology, Chicago Medical School at Rosalind Franklin University of Medicine and Science, Vernon Hills, IL, USA |