Comparative Risk of Major Congenital Malformations With Antiseizure Medication Combinations vs Valproate Monotherapy in Pregnancy.

Cohen JM, Alvestad S, Suarez EA, Schaffer A, Selmer RM, Havard A, Bateman BT, Cesta CE, Zoega H, Odsbu I, Huybrechts KF, Kjerpeseth LJ, Straub L, Leinonen MK, Bjørk MH, Nørgaard M, Gissler M, Ulrichsen SP, Hernandez-Diaz S, Tomson T, Furu K.