| Affiliation: | 1. Reproductive Medicine Program, Department of Obstetrics and Gynecology, The Chicago Medical School at Rosalind Franklin University of Medicine and Science, , Vernon Hills, IL, USA;2. Maternal‐fetal medicine, Department of Obstetrics and Gynecology, Cheil General Hospital & Women's Healthcare Center, Kwandong University, College of Medicine, , Seoul, Korea;3. Department of Obstetrics and Gynecology, School of Medicine, Keimyung University, , Daegu, Korea;4. Department of Microbiology and Immunology, The Chicago Medical School at Rosalind Franklin University of Medicine and Science, , Vernon Hills, IL, USA |
