[1] UCL, Res Dept Primary Care & Populat Hlth, London, England
[2] Karolinska Inst, Dept Clin Neurosci, Stockholm, Sweden
[3] Univ British Columbia, Div Neurol, Dept Med, Vancouver, BC, Canada
[4] British Columbia Ctr Excellence HIV AIDS, Vancouver, BC, Canada
[5] Univ Gothenburg, Dept Infect Dis, Gothenburg, Sweden
[6] Karolinska Inst, Dept Global Publ Hlth, Stockholm, Sweden