1. Department of Psychiatry, University of Pittsburgh, 3811 O'Hara Street, Pittsburgh, PA, USA
2. Department of Pediatrics, New York University School of Medicine, 403 East 34th Street, New York, NY, USA
3. Department of Epidemiology, Mailman School of Public Health, Columbia University, 722 West 168 Street, New York, NY, USA
4. Department of Family and Preventive Medicine, School of Medicine, University of Utah, 375 Chipeta Way, Salt Lake City, UT, USA
5. Department of Obstetrics, Gynecology and Reproductive Biology, Brigham and Women’s Hospital, Harvard Medical School, 75 Francis Street, Boston, MA, USA
6. Department of Epidemiology, Colorado School of Public Health, University of Colorado, 13001 East 17th Place, Denver, CO, USA
7. Health Sciences Library System, School of Medicine, University of Pittsburgh, 3550 Terrace Street, Pittsburgh, PA, USA
8. Center for Environmental Research and Children’s Health, University of California Berkeley, 1995 University Avenue, Berkley CA, USA