1. McGill University Health Centre; Montreal Quebec Canada
2. Klinikum Saarbrücken, Saarbrücken, and Technische Universität München; München Germany
3. University of Michigan Medical Center; Ann Arbor
4. University of British Columbia; Vancouver British Columbia Canada
5. The Ottawa Hospital; Ottawa Ontario Canada
6. McGill University Health Centre and Montreal General Hospital Medical Library; Montreal Quebec Canada
7. University of Calgary; Calgary Alberta Canada
8. Dalhousie University; Halifax Nova Scotia Canada
9. University of British Columbia, Vancouver, and Arthritis Research Centre of Canada; Richmond British Columbia Canada