Investigating the effects of cesarean delivery and antibiotic use in early childhood on risk of later attention deficit hyperactivity disorder. - Axelsson, Paul Bryde; Clausen, Tine Dalsgaard; Petersen, Anne Helby; Hageman, Ida; Pinborg, Anja; Kessing, Lars Vedel; Bergholt, Thomas; Rasmussen, Steen Christian; Keiding, Niels; Løkkegaard, Ellen Christine Leth (Journal of Child Psychology & Psychiatry, 2019)