[1] Lund Univ, Dept Psychol, Lund, Sweden
[2] Reg Ostergotland, Dept Child & Adolescent Psychiat, Linkoping, Sweden
[3] Univ Gothenburg, Inst Hlth & Care Sci, Sahlgrenska Acad, Gothenburg, Sweden
[4] Sahlgrens Univ Hosp, Dept Surg, Reg Vastra Gotaland, Gothenburg, Sweden
[5] Replica Commun, Kristianstad, Sweden
[6] Univ Gothenburg, Dept Pediat, Inst Clin Sci, Sahlgrenska Acad, Gothenburg, Sweden
[7] Lund Univ, Dept Psychol, Box 213, S-22100 Lund, Sweden