1 Department of Psychotherapy and Psychosomatic Medicine, Faculty of Medicine, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany.
2 Department of Clinical Psychology and Experimental Psychopathology, Faculty of Behavioural and Social Sciences, University of Groningen, Groningen, Netherlands.
4 Faculty of Medicine, Institute and Policlinic of Occupational and Social Medicine, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany.
5 Faculty of Medicine, Institute for Systems Medicine (ISM), MSH Medical School Hamburg, Hamburg, Germany.
6 Department of Childhood and Families, Norwegian Institute of Public Health, Oslo, Norway.