Schmidt, R. J., Romitti, P. A., Burns, T. L., Browne, M. L., Druschel, C. M., & Olney, R. S. (2009). Maternal Caffeine Consumption and Risk of Neural Tube Defects. Birth Defects Res A Clin Mol Teratol.

Schmidt, Rebecca J., Paul A. Romitti, Trudy L. Burns, Marilyn L. Browne, Charlotte M. Druschel, och Richard S. Olney. "Maternal Caffeine Consumption and Risk of Neural Tube Defects." Birth Defects Res A Clin Mol Teratol 2009.

Schmidt, Rebecca J., et al. "Maternal Caffeine Consumption and Risk of Neural Tube Defects." Birth Defects Res A Clin Mol Teratol 2009.