1. Lawson Health Research Institute, Lab FB125, 268 Grosvenor Street, London, ON, Canada N6A 4V2
2. Department of Psychiatry, University of Western Ontario, London, ON, Canada N6A 3K7
3. Medical and Scientific of HG & H Pharmaceuticals (Pty) Ltd., 193 Bryanston Drive, Bryanston 2192, South Africa
4. Department of Psychiatry, School of Medicine, University of Puerto Rico, San Juan, PR 00936-5067, USA
5. Medical and Scientific Affairs, P L Thomas & Co., Inc., Morristown, NJ 07960, USA
6. Department of Psychiatry, Island Medical Program, University of Victoria, University British Columbia Extended Medical Campus, Victoria, BC, Canada V8W 2Y2
7. Department of Psychiatry, Northern Ontario School of Medicine, Thunder Bay, ON, Canada P7B 5E1