[1] Univ Copenhagen, Rigshosp, Ctr Hlth & Infect Dis Res, CHIP, DK-2100 Copenhagen, Denmark
[2] Univ Copenhagen, Rigshosp, WHO Collaborating Ctr HIV & Viral Hepatitis, DK-2100 Copenhagen, Denmark
[3] Epidemiol Ctr HIV AIDS STI Catalonia CEEISCAT, Barcelona, Spain
[4] EMCDDA, Lisbon, Portugal
[5] Katholieke Univ Leuven, Dept Publ Hlth & Primary Care, Leuven, Belgium
[6] LSHTM, London, England
[7] Univ Bristol, Sch Social & Community Med, Bristol, Avon, England
[8] Publ Hlth Serv, Dept Res, Amsterdam, Netherlands
[9] Univ Amsterdam, Acad Med Ctr, Ctr Infect & Immun Amsterdam CINIMA, NL-1105 AZ Amsterdam, Netherlands
[10] Univ Med Ctr Utrecht, Julius Ctr Hlth Sci & Primary Care, Utrecht, Netherlands
[11] Natl Inst Publ Hlth & Environm, Ctr Infect Dis Control, NL-3720 BA Bilthoven, Netherlands
[12] Univ Athens, Sch Med, Lab Hyg Epidemiol & Med Stat, Natl Reference Ctr Retroviruses, GR-11527 Athens, Greece
[13] European Liver Patients Assoc, B-3800 St Truiden, Belgium
[14] Correlat European Network Social Inclus & Hlth, Amsterdam, Netherlands
[15] European AIDS Treatment Grp, B-1050 Brussels, Belgium