Cueto HT, Riis AH, Hatch EE, Wise LA, Rothman KJ, Sørensen HT, Mikkelsen EM. Folic acid supplementation and fecundability: a Danish prospective cohort study. Eur J Clin Nutr. 2016 Jan;70(1):66-71. doi: 10.1038/ejcn.2015.94
Rebordosa C, Zelop CM, Kogevinas M, Sørensen HT, Olsen J. Use of acetaminophen during pregnancy and risk of preeclampsia, hypertensive and vascular disorders: a birth cohort study. J Matern Fetal Neonatal Med. 2010 May;23(5):371-8.
Williams LK, Pladevall-Vila M, Fendrick AM, Lafata JE, McMahon LF. Differences in the reporting of care-related patient injuries to existing reporting systems. Jt Comm J Qual Patient Saf. 2003 Sep;29(9):460-7.