1. Dr. Jørgensen and Prof. Mainz are with the Department of Psychiatry, Aalborg University Hospital, Aalborg, Denmark. Prof. Carinci is with the Faculty of Health and Medical Sciences, University of Surrey, Guildford, Surrey, United Kingdom. Dr. Thomsen and Dr. Johnsen are with the Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark.