Rebecca J. Baer 1, 2, Molly R. Altman 2, 3, Scott P. Oltman 2, 4, Kelli K. Ryckman 5, Christina D. Chambers 1, Larry Rand 2, 6, Laura L. Jelliffe-Pawlowski 2, 4
1 Department of Pediatrics, University of California San Diego, La Jolla, CA
2 California Preterm Birth Initiative, University of California San Francisco, San Francisco, CA
3 Department of Family Health Care Nursing, University of California San Francisco, San Francisco, CA
4 Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, CA
5 Departments of Epidemiology and Pediatrics, University of Iowa, Iowa City, IA
6 Department of Obstetrics, Gynecology and Reproductive Sciences, University of California San Francisco, San Francisco, CA