1. University of Otago; Department of Psychological Medicine; Dunedin School of Medicine PO Box 913 Dunedin New Zealand 9010
2. Dunedin School of Medicine, University of Otago; Department of Preventive & Social Medicine; PO Box 913 Dunedin New Zealand 9054
3. Baylor College of Medicine, Texas Medical Centre; Menninger Department of Psychiatry; Houston Texas USA
4. University of Western Ontario; Department of Psychiatry; Regional Mental Health Care-Saint Thomas 467 Sunset Drive St Thomas Ontario Canada N6P 3V9