1. Epidemiology, Biostatistics and Biodemography, Department of Public Health; University of Southern Denmark; Odense C Denmark
2. Psychiatric Department in Copenhagen; University of Copenhagen, Copenhagen University Hospital; Denmark
3. Department of Health Management and Policy; University of Iowa College of Public Health; Iowa City Iowa
4. Department of Clinical Genetics, Department of Biochemistry and Pharmacology; Odense University Hospital; Odense C Denmark