1. Department of Surgical Sciences; Forensic Medicine; Uppsala University; Dag Hammarskölds väg 17 Uppsala SE-752 37 Sweden
2. Department of Clinical Neuroscience; Division of Psychiatry; Karolinska Institutet; St Göran; Stockholm SE-112 81 Sweden
3. Stockholm Dependency Center; Folkungagatan 44 Stockholm SE 118 95 Sweden
4. Department of Clinical Neuroscience; Karolinska Institutet; Karolinska sjukhuset Z8 Stockholm SE 171 76 Sweden