1. Division of Endocrinology, Metabolism, and Molecular Medicine, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois
2. Department of Obstetrics and Gynecology, Pennsylvania State University College of Medicine, Hershey, Pennsylvania
3. Center for Genetic Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois
4. Department of Anthropology, Northwestern University, Evanston, Illinois