R.K. Salokangas 1, M. Heinimaa 1, T. Svirskis 1, J. Klosterkoetter 2, S. Ruhrmann 2, H. Graf von Reventlow 2, D.H. Linszen 3, P.M. Dingemans 3, M. Birchwood 4, P. Patterson 4, G. Juckel 5, A. Morrison 6, the EPOS Group 1, 6
1 Psychiatric Clinic, University of Turku, Turku University Hospital, Turku,, Finland
2 Department of Psychiatry and Psychotherapy, University of Cologne, University Hospital of Cologne, Cologne, Germany
3 Academisch Psychiatrisch Centrum, Academic Medical Centre, Adolescentenkliniek, Amsterdam, The Netherlands
4 Early Intervention Service, University of Birmingham, Birmingham, UK
5 Department of Psychiatry, Ruhr-University of Bochum, LWL-Klinik, Bochum, Germany
6 Department of Psychology, Victoria University of Manchester, Manchester, UK