1. Curtin University; National Drug Research Institute; Perth Western Australia
2. Dept of Psychology - Centre for Addictions Research of BC; University of Victoria; BC Canada
3. Boston Medical Center; Section on General Internal Medicine; Boston MA USA
4. Karolinska Institutet; Department of Public Health Sciences; Stockholm Sweden
5. Sahlgrenska Academy and University Hospital; The Queen Silvia Children's Hospital-Paediatric Clinical Physiology; Goteborg Sweden