1. From the Department of Health Care Organization and Policy, School of Public Health, University of Alabama, Birmingham (K.W.); Ibis Reproductive Health, Oakland, CA (D.G.); the Department of Obstetrics, Gynecology and Reproductive Sciences, University of California, San Francisco, San Francisco (D.G.); and the Department of Sociology and the Population Research Center, University of Texas, Austin (K.H., J.E.P).