1. Department of oncology, Saint John Regional Hospital, Dalhousie University, and University of New Brunswick, Saint John, Canada;
2. BC Cancer Agency, Vancouver, Canada;
3. Department of Medical Oncology and Hematology, Princess Margaret Cancer Centre, Toronto, Canada;
4. Division of Hematology, Sunnybrook Health Services Centre, Toronto, Canada;
5. Department of Hematology, QEII Health Sciences Centre, Halifax, Canada;
6. Department of Hematology, Sunnybrook Health Services Centre, Toronto, Canada;
7. Canadian Cancer Trials Group, Cancer Research Institute, Queen's University, Kingston, Canada