Hasan, R., Olshan, A. F., Herring, A. H., Savitz, D. A., Siega-Riz, A. M., & Hartmann, K. E. (2009). Self-reported Vitamin Supplementation in Early Pregnancy and Risk of Miscarriage. Oxford University Press.

Hasan, Reem, Andrew F. Olshan, Amy H. Herring, David A. Savitz, Anna Maria Siega-Riz, e Katherine E. Hartmann. Self-reported Vitamin Supplementation in Early Pregnancy and Risk of Miscarriage. Oxford University Press, 2009.

Hasan, Reem, et al. Self-reported Vitamin Supplementation in Early Pregnancy and Risk of Miscarriage. Oxford University Press, 2009.