1. Department of Medicine (Division of Hematology) and the Ottawa Hospital Research Institute University of Ottawa Ottawa Ontario Canada
2. Department of Research Ostfold Hospital Trust Institute of Clinical MedicineUniversity of Oslo Oslo Norway
3. Division of Hematology Department of Medicine University of Western Ontario London Ontario Canada
4. Division of Hematology Nova Scotia Health Authority Halifax Nova Scotia Canada
5. Division of Clinical Epidemiology Department of Medicine Lady Davis Institute McGill University Montreal Quebec Canada
6. Research Institute of Internal Medicine Oslo University Hospital Oslo Norway
7. McMaster University Hamilton Ontario Canada
8. The Ottawa Hospital Research Institute University of Ottawa Ottawa Ontario Canada
9. Department of Medicine Faculty of Medicine McGill University Montréal Quebec Canada