1. Department of Obstetrics and GynecologyIndiana University Indianapolis Indiana USA
2. Department of PathologyLaboratory MedicineIndiana University Indianapolis Indiana USA
3. Department of General SurgerySecond Hospital of Jilin University Changchun Jilin China
4. Division of Endocrinology, Diabetes, and MetabolismDepartment of MedicineWashington University School of Medicine St. Louis Missouri USA