[1] Univ Gothenburg, Sahlgrenska Acad, Inst Hlth & Care Sci, Box 457, S-40530 Gothenburg, Sweden
[2] Univ Gothenburg, Ctr Person Ctr Care GPCC, Gothenburg, Sweden
[3] Sahlgrens Univ Hosp, Dept Psychiat, Gothenburg, Sweden
[4] Univ Gothenburg, Sahlgrenska Acad, Dept Mol & Clin Med, Gothenburg, Sweden
[5] Imperial Coll, Natl Heart & Lung Inst, London, England
[6] Reg Vastra Gotaland, Narhalsan Res & Dev Primary Hlth Care, Gothenburg, Sweden