Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm (Zhou, Lageborn, Sjölander, Larsson, Landén, Lichtenstein, Pettersson); Department of Psychological and Brain Sciences, Indiana University, Bloomington (D’Onofrio); Institute of Neuroscience and Physiology, Sahlgrenska Academy at Gothenburg University, Gothenburg, Sweden (Landén).