• Periconceptional Folic Acid Supplementation and Infant Risk of Congenital Heart Defects in Norway 1999-2009 

      Leirgul, Elisabeth; Gildestad, Trude; Nilsen, Roy Miodini; Fomina, Tatiana; Brodwall, Kristoffer; Greve, Gottfried; Vollset, Stein Emil; Holmstrøm, Henrik; Tell, Grethe Seppola; Øyen, Nina (Peer reviewed; Journal article, 2015)
      Background The birth prevalence of congenital heart defects (CHDs) has decreased in Canada and Europe. Recommended intake of folic acid in pregnancy is a suggestive risk-reducing factor for CHDs. We investigated the ...
    • Supplemental folic acid in pregnancy and childhood cancer risk 

      Mortensen, Jan Helge Seglem; Øyen, Nina; Fomina, Tatiana; Melbye, Mads; Tretli, Steinar; Vollset, Stein Emil; Bjørge, Tone (Peer reviewed; Journal article, 2016)
      Background: We investigated the association between supplemental folic acid in pregnancy and childhood cancer in a nationwide study of 687 406 live births in Norway, 1999–2010, and 799 children diagnosed later with cancer. ...