John S. Santelli is with the Department of Population and Family Health and the Department of Pediatrics, Columbia University, New York, NY. Laura D. Lindberg is with the Guttmacher Institute, New York, NY. Stephanie A. Grilo is a PhD candidate in sociomedical sciences at Columbia University. Leslie M. Kantor is with the Department of Urban-Global Public Health, Rutgers School of Public Health, Piscataway Township, NJ.