Journal article (2014) - Erik van den Akker (author) , E.B. van den Akker (author) , Erik B. van den Akker (author) , E. B. van den Akker (author) , Erik Ben van den Akker (author) , WM Passtoors (author) , BT Heijmans (author) , A.B. Maier (author) , DI Boomsma (author) , JN Kok (author) , PE Slagboom (author) , M.J.T. Reinders (author) , Marcel J.T. Reinders (author) , Marcel Reinders (author) , M. J.T. Reinders (author) , M. Beekman (author) , M Beekman (author) , R. Jansen (author) , E.W. van Zwet (author) , Jelle J. Goeman (author) , Marc Hulsman (author) , M. Hulsman (author) , V Emilsson (author) , Marcus Perola (author) , G Wilemsen (author) , BWJH Penninx (author)