1. Department of Medicine Huddinge, Division of Infectious Diseases, Karolinska Institutet, Karolinska University Hospital Huddinge, Stockholm, Sweden;
2. Capio Maria, Addiction Centre, Stockholm, Sweden;
3. Centre for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden;
4. Stockholm Health Care Services, Stockholm County Council, Stockholm, Sweden