Effect of maternal height and weight on risk of preterm birth in singleton and twin births resulting from in vitro fertilization: a retrospective cohort study using the Society for Assisted Reproductive Technology Clinic Outcome Reporting System Richard P. Dickey, M.D., Ph.D., Xu Xiong, M.D., Dr.P.H., Rebekah E. Gee, M.D., M.P.H., Gabriella Pridjian, M.D. Fertility and Sterility Volume 97, Issue 2, Pages 349-354 (February 2012) DOI: 10.1016/j.fertnstert.2011.11.017 Copyright © 2012 American Society for Reproductive Medicine Terms and Conditions
Figure 1 Flow chart of records included in study. Fertility and Sterility 2012 97, 349-354DOI: (10.1016/j.fertnstert.2011.11.017) Copyright © 2012 American Society for Reproductive Medicine Terms and Conditions