[1] Univ Gothenburg, Dept Psychiat & Neurochem, Neuropsychiat Epidemiol Unit, Inst Neurosci & Physiol,Sahlgrenska Acad, Wallinsgatan 6, S-43141 Molndal, Sweden
[2] Univ Gothenburg, Age Cap Ctr Ageing & Hlth, Wallinsgatan 6, S-43141 Molndal, Sweden
[3] Sahlgrens Univ Hosp, Dept Neuropsychiat, Gothenburg, Region Vastra G, Sweden
[4] Univ Gothenburg, Dept Journalism Media & Commun, POB 100, S-40530 Gothenburg, Sweden