From the Department of Obstetrics and Gynecology, Baystate Medical Center, Tufts University School of Medicine, Springfield, Massachusetts.
Reprints: Keisha Jones, MD, Tufts University School of Medicine, Baystate Medical Center, 759 Chestnut St, S-1680, Springfield, MA 01199. E-mail: [email protected].
Author contribution: K.J., G.W., and O.H.: study design, data analysis, and manuscript preparation, R.R.: study design, data entry, and manuscript preparation, P.S.M.: data analysis and manuscript preparation.
This project was supported by the National Center for Advancing Translational Sciences, National Institutes of Health, award no. UL1TR000073 and no. UL1TR001064. The content is solely the responsibility of the authors and does not necessarily represent the official views of the NIH.
The authors declare that they have nothing to disclose.
The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health.