Hornig, M; Bresnahan, M A; Che, X; Schultz, A F; Ukaigwe, J E; Eddy, M L; Hirtz, D; Gunnes, Nina; Lie, Kari Kveim; Magnus, Per; Mjaaland, Siri; Reichborn-Kjennerud, Ted; Schjølberg, Synnve; Øyen, Anne-Siri; Levin, B; Susser, E S; Stoltenberg, Camilla; Lipkin, W I (Peer reviewed; Journal article, 2017)