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
Langagergaard V, Gislum M, Skriver MV, Norgard B, Lash TL, Rothman KJ, Sorensen HT. Birth outcome in women with breast cancer. Br J Cancer. 2006 Jan 1;94(1):142-6.