1 Department of Infectious Diseases, Akershus University Hospital, 1478 Lørenskog, Norway; Institute of Clinical Medicine, University of Oslo, Oslo, Norway. Electronic address: odalgard@medisin.uio.no.
2 Department of Infectious Diseases, Akershus University Hospital, 1478 Lørenskog, Norway.
3 Norwegian National Advisory Unit on Concurrent Substance Abuse and Mental Health Disorders, Innlandet Hospital, Brumundal, Norway.