1 Department of Obstetrics and Gynecology, Columbia University Vagelos College of Physicians and Surgeons, New York, New York.
2 Division of Behavioral Medicine, Department of Psychiatry, Columbia University Vagelos College of Physicians and Surgeons, New York, New York.
3 Division of Child and Adolescent Health, Department of Pediatrics, Columbia University Vagelos College of Physicians and Surgeons and New York-Presbyterian, New York, New York.