1. Division of Endocrinology, Northwestern University Feinberg School of Medicine, Chicago, Illinois;
2. Department of Obstetrics and Gynecology, The Ohio State University, Columbus, Ohio;
3. Department of Pediatrics, Karolinska Institute, Stockholm, Sweden;
4. Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois;
5. Department of Obstetrics and Gynaecology, University of Melbourne, Burnley, Victoria, Australia;
6. Division of Endocrinology and Diabetes, University of Southern California Keck School of Medicine, Los Angeles, California.