1. Department Anesthesiology, Pharmacology and Therapeutics; University of British Columbia; Vancouver BC Canada
2. Pharmaceutical Services Division; BC Ministry of Health; Victoria BC Canada
3. Division of Research; Kaiser Permanente; Oakland CA USA
4. Biostatistics Unit; Group Health Research Institute; Seattle WA USA
5. Department of Biostatistics; University of Washington; Seattle WA USA
6. Food and Drug Administration; Rockville MD USA
7. Statistics Department; Columbia University; New York NY USA