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Carrier M, Abou-Nassar K, Mallick R, Tagalakis V, Shivakumar S, Schattner A, Kuruvilla P, Hill D, Spadafora S, Marquis K, Trinkaus M, Tomiak A, Lee AYY, Gross PL, Lazo-Langner A, El-Maraghi R, Goss G, Le Gal G, Stewart D, Ramsay T, Rodger M, Witham D, Wells PS. Apixaban to Prevent Venous Thromboembolism in Patients with Cancer. N Engl J Med 2019; 380:711-719. [PMID: 30511879 DOI: 10.1056/nejmoa1814468] [Citation(s) in RCA: 538] [Impact Index Per Article: 107.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
BACKGROUND Patients with active cancer have an increased risk of venous thromboembolism, which results in substantial morbidity, mortality, and health care expenditures. The Khorana score (range, 0 to 6, with higher scores indicating a higher risk of venous thromboembolism) has been validated to identify patients with cancer at elevated risk for this complication and may help select those who could benefit from thromboprophylaxis. METHODS We conducted a randomized, placebo-controlled, double-blind clinical trial assessing the efficacy and safety of apixaban (2.5 mg twice daily) for thromboprophylaxis in ambulatory patients with cancer who were at intermediate-to-high risk for venous thromboembolism (Khorana score, ≥2) and were initiating chemotherapy. The primary efficacy outcome was objectively documented venous thromboembolism over a follow-up period of 180 days. The main safety outcome was a major bleeding episode. RESULTS Of the 574 patients who underwent randomization, 563 were included in the modified intention-to-treat analysis. Venous thromboembolism occurred in 12 of 288 patients (4.2%) in the apixaban group and in 28 of 275 patients (10.2%) in the placebo group (hazard ratio, 0.41; 95% confidence interval [CI], 0.26 to 0.65; P<0.001). In the modified intention-to-treat analysis, major bleeding occurred in 10 patients (3.5%) in the apixaban group and in 5 patients (1.8%) in the placebo group (hazard ratio, 2.00; 95% CI, 1.01 to 3.95; P = 0.046). During the treatment period, major bleeding occurred in 6 patients (2.1%) in the apixaban group and in 3 patients (1.1%) in the placebo group (hazard ratio, 1.89; 95% CI, 0.39 to 9.24). CONCLUSIONS Apixaban therapy resulted in a significantly lower rate of venous thromboembolism than did placebo among intermediate-to-high-risk ambulatory patients with cancer who were starting chemotherapy. The rate of major bleeding episodes was higher with apixaban than with placebo. (Funded by the Canadian Institutes of Health Research and Bristol-Myers Squibb-Pfizer Alliance; AVERT ClinicalTrials.gov number, NCT02048865.).
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Affiliation(s)
- Marc Carrier
- From the Department of Medicine, University of Ottawa, Ottawa Hospital Research Institute, Ottawa (M.C., R.M., G.G., G.L.G., D.S., T.R., M.R., D.W., P.S.W.), Centre Intégré de Santé et des Services Sociaux de l'Outaouais, Gatineau, QC (K.A.-N.), Jewish General Hospital, Lady Davis Institute for Medical Research, McGill University, Montreal (V.T.), Nova Scotia Health Authority, Halifax (S. Shivakumar), Lakeridge Health, Oshawa, ON (A.S.), William Osler Health Centre, Brampton, ON (P.K.), Sault Area Hospital, Sault Ste. Marie, ON (D.H., S. Spadafora), Hôpital Régional de Rimouski, Rimouski, QC (K.M.), Markham Stouffville Hospital, Markham, ON (M.T.), Kingston General Hospital, Kingston, ON (A.T.), University of British Columbia, British Columbia Cancer Agency, Vancouver (A.Y.Y.L.), Hamilton Health Sciences, Hamilton, ON (P.L.G.), London Health Sciences Centre, London, ON (A.L.-L.), and Royal Victoria Regional Health Centre, Barrie, ON (R.E.-M.) - all in Canada
| | - Karim Abou-Nassar
- From the Department of Medicine, University of Ottawa, Ottawa Hospital Research Institute, Ottawa (M.C., R.M., G.G., G.L.G., D.S., T.R., M.R., D.W., P.S.W.), Centre Intégré de Santé et des Services Sociaux de l'Outaouais, Gatineau, QC (K.A.-N.), Jewish General Hospital, Lady Davis Institute for Medical Research, McGill University, Montreal (V.T.), Nova Scotia Health Authority, Halifax (S. Shivakumar), Lakeridge Health, Oshawa, ON (A.S.), William Osler Health Centre, Brampton, ON (P.K.), Sault Area Hospital, Sault Ste. Marie, ON (D.H., S. Spadafora), Hôpital Régional de Rimouski, Rimouski, QC (K.M.), Markham Stouffville Hospital, Markham, ON (M.T.), Kingston General Hospital, Kingston, ON (A.T.), University of British Columbia, British Columbia Cancer Agency, Vancouver (A.Y.Y.L.), Hamilton Health Sciences, Hamilton, ON (P.L.G.), London Health Sciences Centre, London, ON (A.L.-L.), and Royal Victoria Regional Health Centre, Barrie, ON (R.E.-M.) - all in Canada
| | - Ranjeeta Mallick
- From the Department of Medicine, University of Ottawa, Ottawa Hospital Research Institute, Ottawa (M.C., R.M., G.G., G.L.G., D.S., T.R., M.R., D.W., P.S.W.), Centre Intégré de Santé et des Services Sociaux de l'Outaouais, Gatineau, QC (K.A.-N.), Jewish General Hospital, Lady Davis Institute for Medical Research, McGill University, Montreal (V.T.), Nova Scotia Health Authority, Halifax (S. Shivakumar), Lakeridge Health, Oshawa, ON (A.S.), William Osler Health Centre, Brampton, ON (P.K.), Sault Area Hospital, Sault Ste. Marie, ON (D.H., S. Spadafora), Hôpital Régional de Rimouski, Rimouski, QC (K.M.), Markham Stouffville Hospital, Markham, ON (M.T.), Kingston General Hospital, Kingston, ON (A.T.), University of British Columbia, British Columbia Cancer Agency, Vancouver (A.Y.Y.L.), Hamilton Health Sciences, Hamilton, ON (P.L.G.), London Health Sciences Centre, London, ON (A.L.-L.), and Royal Victoria Regional Health Centre, Barrie, ON (R.E.-M.) - all in Canada
| | - Vicky Tagalakis
- From the Department of Medicine, University of Ottawa, Ottawa Hospital Research Institute, Ottawa (M.C., R.M., G.G., G.L.G., D.S., T.R., M.R., D.W., P.S.W.), Centre Intégré de Santé et des Services Sociaux de l'Outaouais, Gatineau, QC (K.A.-N.), Jewish General Hospital, Lady Davis Institute for Medical Research, McGill University, Montreal (V.T.), Nova Scotia Health Authority, Halifax (S. Shivakumar), Lakeridge Health, Oshawa, ON (A.S.), William Osler Health Centre, Brampton, ON (P.K.), Sault Area Hospital, Sault Ste. Marie, ON (D.H., S. Spadafora), Hôpital Régional de Rimouski, Rimouski, QC (K.M.), Markham Stouffville Hospital, Markham, ON (M.T.), Kingston General Hospital, Kingston, ON (A.T.), University of British Columbia, British Columbia Cancer Agency, Vancouver (A.Y.Y.L.), Hamilton Health Sciences, Hamilton, ON (P.L.G.), London Health Sciences Centre, London, ON (A.L.-L.), and Royal Victoria Regional Health Centre, Barrie, ON (R.E.-M.) - all in Canada
| | - Sudeep Shivakumar
- From the Department of Medicine, University of Ottawa, Ottawa Hospital Research Institute, Ottawa (M.C., R.M., G.G., G.L.G., D.S., T.R., M.R., D.W., P.S.W.), Centre Intégré de Santé et des Services Sociaux de l'Outaouais, Gatineau, QC (K.A.-N.), Jewish General Hospital, Lady Davis Institute for Medical Research, McGill University, Montreal (V.T.), Nova Scotia Health Authority, Halifax (S. Shivakumar), Lakeridge Health, Oshawa, ON (A.S.), William Osler Health Centre, Brampton, ON (P.K.), Sault Area Hospital, Sault Ste. Marie, ON (D.H., S. Spadafora), Hôpital Régional de Rimouski, Rimouski, QC (K.M.), Markham Stouffville Hospital, Markham, ON (M.T.), Kingston General Hospital, Kingston, ON (A.T.), University of British Columbia, British Columbia Cancer Agency, Vancouver (A.Y.Y.L.), Hamilton Health Sciences, Hamilton, ON (P.L.G.), London Health Sciences Centre, London, ON (A.L.-L.), and Royal Victoria Regional Health Centre, Barrie, ON (R.E.-M.) - all in Canada
| | - Ariah Schattner
- From the Department of Medicine, University of Ottawa, Ottawa Hospital Research Institute, Ottawa (M.C., R.M., G.G., G.L.G., D.S., T.R., M.R., D.W., P.S.W.), Centre Intégré de Santé et des Services Sociaux de l'Outaouais, Gatineau, QC (K.A.-N.), Jewish General Hospital, Lady Davis Institute for Medical Research, McGill University, Montreal (V.T.), Nova Scotia Health Authority, Halifax (S. Shivakumar), Lakeridge Health, Oshawa, ON (A.S.), William Osler Health Centre, Brampton, ON (P.K.), Sault Area Hospital, Sault Ste. Marie, ON (D.H., S. Spadafora), Hôpital Régional de Rimouski, Rimouski, QC (K.M.), Markham Stouffville Hospital, Markham, ON (M.T.), Kingston General Hospital, Kingston, ON (A.T.), University of British Columbia, British Columbia Cancer Agency, Vancouver (A.Y.Y.L.), Hamilton Health Sciences, Hamilton, ON (P.L.G.), London Health Sciences Centre, London, ON (A.L.-L.), and Royal Victoria Regional Health Centre, Barrie, ON (R.E.-M.) - all in Canada
| | - Philip Kuruvilla
- From the Department of Medicine, University of Ottawa, Ottawa Hospital Research Institute, Ottawa (M.C., R.M., G.G., G.L.G., D.S., T.R., M.R., D.W., P.S.W.), Centre Intégré de Santé et des Services Sociaux de l'Outaouais, Gatineau, QC (K.A.-N.), Jewish General Hospital, Lady Davis Institute for Medical Research, McGill University, Montreal (V.T.), Nova Scotia Health Authority, Halifax (S. Shivakumar), Lakeridge Health, Oshawa, ON (A.S.), William Osler Health Centre, Brampton, ON (P.K.), Sault Area Hospital, Sault Ste. Marie, ON (D.H., S. Spadafora), Hôpital Régional de Rimouski, Rimouski, QC (K.M.), Markham Stouffville Hospital, Markham, ON (M.T.), Kingston General Hospital, Kingston, ON (A.T.), University of British Columbia, British Columbia Cancer Agency, Vancouver (A.Y.Y.L.), Hamilton Health Sciences, Hamilton, ON (P.L.G.), London Health Sciences Centre, London, ON (A.L.-L.), and Royal Victoria Regional Health Centre, Barrie, ON (R.E.-M.) - all in Canada
| | - Danny Hill
- From the Department of Medicine, University of Ottawa, Ottawa Hospital Research Institute, Ottawa (M.C., R.M., G.G., G.L.G., D.S., T.R., M.R., D.W., P.S.W.), Centre Intégré de Santé et des Services Sociaux de l'Outaouais, Gatineau, QC (K.A.-N.), Jewish General Hospital, Lady Davis Institute for Medical Research, McGill University, Montreal (V.T.), Nova Scotia Health Authority, Halifax (S. Shivakumar), Lakeridge Health, Oshawa, ON (A.S.), William Osler Health Centre, Brampton, ON (P.K.), Sault Area Hospital, Sault Ste. Marie, ON (D.H., S. Spadafora), Hôpital Régional de Rimouski, Rimouski, QC (K.M.), Markham Stouffville Hospital, Markham, ON (M.T.), Kingston General Hospital, Kingston, ON (A.T.), University of British Columbia, British Columbia Cancer Agency, Vancouver (A.Y.Y.L.), Hamilton Health Sciences, Hamilton, ON (P.L.G.), London Health Sciences Centre, London, ON (A.L.-L.), and Royal Victoria Regional Health Centre, Barrie, ON (R.E.-M.) - all in Canada
| | - Silvana Spadafora
- From the Department of Medicine, University of Ottawa, Ottawa Hospital Research Institute, Ottawa (M.C., R.M., G.G., G.L.G., D.S., T.R., M.R., D.W., P.S.W.), Centre Intégré de Santé et des Services Sociaux de l'Outaouais, Gatineau, QC (K.A.-N.), Jewish General Hospital, Lady Davis Institute for Medical Research, McGill University, Montreal (V.T.), Nova Scotia Health Authority, Halifax (S. Shivakumar), Lakeridge Health, Oshawa, ON (A.S.), William Osler Health Centre, Brampton, ON (P.K.), Sault Area Hospital, Sault Ste. Marie, ON (D.H., S. Spadafora), Hôpital Régional de Rimouski, Rimouski, QC (K.M.), Markham Stouffville Hospital, Markham, ON (M.T.), Kingston General Hospital, Kingston, ON (A.T.), University of British Columbia, British Columbia Cancer Agency, Vancouver (A.Y.Y.L.), Hamilton Health Sciences, Hamilton, ON (P.L.G.), London Health Sciences Centre, London, ON (A.L.-L.), and Royal Victoria Regional Health Centre, Barrie, ON (R.E.-M.) - all in Canada
| | - Katerine Marquis
- From the Department of Medicine, University of Ottawa, Ottawa Hospital Research Institute, Ottawa (M.C., R.M., G.G., G.L.G., D.S., T.R., M.R., D.W., P.S.W.), Centre Intégré de Santé et des Services Sociaux de l'Outaouais, Gatineau, QC (K.A.-N.), Jewish General Hospital, Lady Davis Institute for Medical Research, McGill University, Montreal (V.T.), Nova Scotia Health Authority, Halifax (S. Shivakumar), Lakeridge Health, Oshawa, ON (A.S.), William Osler Health Centre, Brampton, ON (P.K.), Sault Area Hospital, Sault Ste. Marie, ON (D.H., S. Spadafora), Hôpital Régional de Rimouski, Rimouski, QC (K.M.), Markham Stouffville Hospital, Markham, ON (M.T.), Kingston General Hospital, Kingston, ON (A.T.), University of British Columbia, British Columbia Cancer Agency, Vancouver (A.Y.Y.L.), Hamilton Health Sciences, Hamilton, ON (P.L.G.), London Health Sciences Centre, London, ON (A.L.-L.), and Royal Victoria Regional Health Centre, Barrie, ON (R.E.-M.) - all in Canada
| | - Mateya Trinkaus
- From the Department of Medicine, University of Ottawa, Ottawa Hospital Research Institute, Ottawa (M.C., R.M., G.G., G.L.G., D.S., T.R., M.R., D.W., P.S.W.), Centre Intégré de Santé et des Services Sociaux de l'Outaouais, Gatineau, QC (K.A.-N.), Jewish General Hospital, Lady Davis Institute for Medical Research, McGill University, Montreal (V.T.), Nova Scotia Health Authority, Halifax (S. Shivakumar), Lakeridge Health, Oshawa, ON (A.S.), William Osler Health Centre, Brampton, ON (P.K.), Sault Area Hospital, Sault Ste. Marie, ON (D.H., S. Spadafora), Hôpital Régional de Rimouski, Rimouski, QC (K.M.), Markham Stouffville Hospital, Markham, ON (M.T.), Kingston General Hospital, Kingston, ON (A.T.), University of British Columbia, British Columbia Cancer Agency, Vancouver (A.Y.Y.L.), Hamilton Health Sciences, Hamilton, ON (P.L.G.), London Health Sciences Centre, London, ON (A.L.-L.), and Royal Victoria Regional Health Centre, Barrie, ON (R.E.-M.) - all in Canada
| | - Anna Tomiak
- From the Department of Medicine, University of Ottawa, Ottawa Hospital Research Institute, Ottawa (M.C., R.M., G.G., G.L.G., D.S., T.R., M.R., D.W., P.S.W.), Centre Intégré de Santé et des Services Sociaux de l'Outaouais, Gatineau, QC (K.A.-N.), Jewish General Hospital, Lady Davis Institute for Medical Research, McGill University, Montreal (V.T.), Nova Scotia Health Authority, Halifax (S. Shivakumar), Lakeridge Health, Oshawa, ON (A.S.), William Osler Health Centre, Brampton, ON (P.K.), Sault Area Hospital, Sault Ste. Marie, ON (D.H., S. Spadafora), Hôpital Régional de Rimouski, Rimouski, QC (K.M.), Markham Stouffville Hospital, Markham, ON (M.T.), Kingston General Hospital, Kingston, ON (A.T.), University of British Columbia, British Columbia Cancer Agency, Vancouver (A.Y.Y.L.), Hamilton Health Sciences, Hamilton, ON (P.L.G.), London Health Sciences Centre, London, ON (A.L.-L.), and Royal Victoria Regional Health Centre, Barrie, ON (R.E.-M.) - all in Canada
| | - Agnes Y Y Lee
- From the Department of Medicine, University of Ottawa, Ottawa Hospital Research Institute, Ottawa (M.C., R.M., G.G., G.L.G., D.S., T.R., M.R., D.W., P.S.W.), Centre Intégré de Santé et des Services Sociaux de l'Outaouais, Gatineau, QC (K.A.-N.), Jewish General Hospital, Lady Davis Institute for Medical Research, McGill University, Montreal (V.T.), Nova Scotia Health Authority, Halifax (S. Shivakumar), Lakeridge Health, Oshawa, ON (A.S.), William Osler Health Centre, Brampton, ON (P.K.), Sault Area Hospital, Sault Ste. Marie, ON (D.H., S. Spadafora), Hôpital Régional de Rimouski, Rimouski, QC (K.M.), Markham Stouffville Hospital, Markham, ON (M.T.), Kingston General Hospital, Kingston, ON (A.T.), University of British Columbia, British Columbia Cancer Agency, Vancouver (A.Y.Y.L.), Hamilton Health Sciences, Hamilton, ON (P.L.G.), London Health Sciences Centre, London, ON (A.L.-L.), and Royal Victoria Regional Health Centre, Barrie, ON (R.E.-M.) - all in Canada
| | - Peter L Gross
- From the Department of Medicine, University of Ottawa, Ottawa Hospital Research Institute, Ottawa (M.C., R.M., G.G., G.L.G., D.S., T.R., M.R., D.W., P.S.W.), Centre Intégré de Santé et des Services Sociaux de l'Outaouais, Gatineau, QC (K.A.-N.), Jewish General Hospital, Lady Davis Institute for Medical Research, McGill University, Montreal (V.T.), Nova Scotia Health Authority, Halifax (S. Shivakumar), Lakeridge Health, Oshawa, ON (A.S.), William Osler Health Centre, Brampton, ON (P.K.), Sault Area Hospital, Sault Ste. Marie, ON (D.H., S. Spadafora), Hôpital Régional de Rimouski, Rimouski, QC (K.M.), Markham Stouffville Hospital, Markham, ON (M.T.), Kingston General Hospital, Kingston, ON (A.T.), University of British Columbia, British Columbia Cancer Agency, Vancouver (A.Y.Y.L.), Hamilton Health Sciences, Hamilton, ON (P.L.G.), London Health Sciences Centre, London, ON (A.L.-L.), and Royal Victoria Regional Health Centre, Barrie, ON (R.E.-M.) - all in Canada
| | - Alejandro Lazo-Langner
- From the Department of Medicine, University of Ottawa, Ottawa Hospital Research Institute, Ottawa (M.C., R.M., G.G., G.L.G., D.S., T.R., M.R., D.W., P.S.W.), Centre Intégré de Santé et des Services Sociaux de l'Outaouais, Gatineau, QC (K.A.-N.), Jewish General Hospital, Lady Davis Institute for Medical Research, McGill University, Montreal (V.T.), Nova Scotia Health Authority, Halifax (S. Shivakumar), Lakeridge Health, Oshawa, ON (A.S.), William Osler Health Centre, Brampton, ON (P.K.), Sault Area Hospital, Sault Ste. Marie, ON (D.H., S. Spadafora), Hôpital Régional de Rimouski, Rimouski, QC (K.M.), Markham Stouffville Hospital, Markham, ON (M.T.), Kingston General Hospital, Kingston, ON (A.T.), University of British Columbia, British Columbia Cancer Agency, Vancouver (A.Y.Y.L.), Hamilton Health Sciences, Hamilton, ON (P.L.G.), London Health Sciences Centre, London, ON (A.L.-L.), and Royal Victoria Regional Health Centre, Barrie, ON (R.E.-M.) - all in Canada
| | - Robert El-Maraghi
- From the Department of Medicine, University of Ottawa, Ottawa Hospital Research Institute, Ottawa (M.C., R.M., G.G., G.L.G., D.S., T.R., M.R., D.W., P.S.W.), Centre Intégré de Santé et des Services Sociaux de l'Outaouais, Gatineau, QC (K.A.-N.), Jewish General Hospital, Lady Davis Institute for Medical Research, McGill University, Montreal (V.T.), Nova Scotia Health Authority, Halifax (S. Shivakumar), Lakeridge Health, Oshawa, ON (A.S.), William Osler Health Centre, Brampton, ON (P.K.), Sault Area Hospital, Sault Ste. Marie, ON (D.H., S. Spadafora), Hôpital Régional de Rimouski, Rimouski, QC (K.M.), Markham Stouffville Hospital, Markham, ON (M.T.), Kingston General Hospital, Kingston, ON (A.T.), University of British Columbia, British Columbia Cancer Agency, Vancouver (A.Y.Y.L.), Hamilton Health Sciences, Hamilton, ON (P.L.G.), London Health Sciences Centre, London, ON (A.L.-L.), and Royal Victoria Regional Health Centre, Barrie, ON (R.E.-M.) - all in Canada
| | - Glenwood Goss
- From the Department of Medicine, University of Ottawa, Ottawa Hospital Research Institute, Ottawa (M.C., R.M., G.G., G.L.G., D.S., T.R., M.R., D.W., P.S.W.), Centre Intégré de Santé et des Services Sociaux de l'Outaouais, Gatineau, QC (K.A.-N.), Jewish General Hospital, Lady Davis Institute for Medical Research, McGill University, Montreal (V.T.), Nova Scotia Health Authority, Halifax (S. Shivakumar), Lakeridge Health, Oshawa, ON (A.S.), William Osler Health Centre, Brampton, ON (P.K.), Sault Area Hospital, Sault Ste. Marie, ON (D.H., S. Spadafora), Hôpital Régional de Rimouski, Rimouski, QC (K.M.), Markham Stouffville Hospital, Markham, ON (M.T.), Kingston General Hospital, Kingston, ON (A.T.), University of British Columbia, British Columbia Cancer Agency, Vancouver (A.Y.Y.L.), Hamilton Health Sciences, Hamilton, ON (P.L.G.), London Health Sciences Centre, London, ON (A.L.-L.), and Royal Victoria Regional Health Centre, Barrie, ON (R.E.-M.) - all in Canada
| | - Gregoire Le Gal
- From the Department of Medicine, University of Ottawa, Ottawa Hospital Research Institute, Ottawa (M.C., R.M., G.G., G.L.G., D.S., T.R., M.R., D.W., P.S.W.), Centre Intégré de Santé et des Services Sociaux de l'Outaouais, Gatineau, QC (K.A.-N.), Jewish General Hospital, Lady Davis Institute for Medical Research, McGill University, Montreal (V.T.), Nova Scotia Health Authority, Halifax (S. Shivakumar), Lakeridge Health, Oshawa, ON (A.S.), William Osler Health Centre, Brampton, ON (P.K.), Sault Area Hospital, Sault Ste. Marie, ON (D.H., S. Spadafora), Hôpital Régional de Rimouski, Rimouski, QC (K.M.), Markham Stouffville Hospital, Markham, ON (M.T.), Kingston General Hospital, Kingston, ON (A.T.), University of British Columbia, British Columbia Cancer Agency, Vancouver (A.Y.Y.L.), Hamilton Health Sciences, Hamilton, ON (P.L.G.), London Health Sciences Centre, London, ON (A.L.-L.), and Royal Victoria Regional Health Centre, Barrie, ON (R.E.-M.) - all in Canada
| | - David Stewart
- From the Department of Medicine, University of Ottawa, Ottawa Hospital Research Institute, Ottawa (M.C., R.M., G.G., G.L.G., D.S., T.R., M.R., D.W., P.S.W.), Centre Intégré de Santé et des Services Sociaux de l'Outaouais, Gatineau, QC (K.A.-N.), Jewish General Hospital, Lady Davis Institute for Medical Research, McGill University, Montreal (V.T.), Nova Scotia Health Authority, Halifax (S. Shivakumar), Lakeridge Health, Oshawa, ON (A.S.), William Osler Health Centre, Brampton, ON (P.K.), Sault Area Hospital, Sault Ste. Marie, ON (D.H., S. Spadafora), Hôpital Régional de Rimouski, Rimouski, QC (K.M.), Markham Stouffville Hospital, Markham, ON (M.T.), Kingston General Hospital, Kingston, ON (A.T.), University of British Columbia, British Columbia Cancer Agency, Vancouver (A.Y.Y.L.), Hamilton Health Sciences, Hamilton, ON (P.L.G.), London Health Sciences Centre, London, ON (A.L.-L.), and Royal Victoria Regional Health Centre, Barrie, ON (R.E.-M.) - all in Canada
| | - Timothy Ramsay
- From the Department of Medicine, University of Ottawa, Ottawa Hospital Research Institute, Ottawa (M.C., R.M., G.G., G.L.G., D.S., T.R., M.R., D.W., P.S.W.), Centre Intégré de Santé et des Services Sociaux de l'Outaouais, Gatineau, QC (K.A.-N.), Jewish General Hospital, Lady Davis Institute for Medical Research, McGill University, Montreal (V.T.), Nova Scotia Health Authority, Halifax (S. Shivakumar), Lakeridge Health, Oshawa, ON (A.S.), William Osler Health Centre, Brampton, ON (P.K.), Sault Area Hospital, Sault Ste. Marie, ON (D.H., S. Spadafora), Hôpital Régional de Rimouski, Rimouski, QC (K.M.), Markham Stouffville Hospital, Markham, ON (M.T.), Kingston General Hospital, Kingston, ON (A.T.), University of British Columbia, British Columbia Cancer Agency, Vancouver (A.Y.Y.L.), Hamilton Health Sciences, Hamilton, ON (P.L.G.), London Health Sciences Centre, London, ON (A.L.-L.), and Royal Victoria Regional Health Centre, Barrie, ON (R.E.-M.) - all in Canada
| | - Marc Rodger
- From the Department of Medicine, University of Ottawa, Ottawa Hospital Research Institute, Ottawa (M.C., R.M., G.G., G.L.G., D.S., T.R., M.R., D.W., P.S.W.), Centre Intégré de Santé et des Services Sociaux de l'Outaouais, Gatineau, QC (K.A.-N.), Jewish General Hospital, Lady Davis Institute for Medical Research, McGill University, Montreal (V.T.), Nova Scotia Health Authority, Halifax (S. Shivakumar), Lakeridge Health, Oshawa, ON (A.S.), William Osler Health Centre, Brampton, ON (P.K.), Sault Area Hospital, Sault Ste. Marie, ON (D.H., S. Spadafora), Hôpital Régional de Rimouski, Rimouski, QC (K.M.), Markham Stouffville Hospital, Markham, ON (M.T.), Kingston General Hospital, Kingston, ON (A.T.), University of British Columbia, British Columbia Cancer Agency, Vancouver (A.Y.Y.L.), Hamilton Health Sciences, Hamilton, ON (P.L.G.), London Health Sciences Centre, London, ON (A.L.-L.), and Royal Victoria Regional Health Centre, Barrie, ON (R.E.-M.) - all in Canada
| | - Debra Witham
- From the Department of Medicine, University of Ottawa, Ottawa Hospital Research Institute, Ottawa (M.C., R.M., G.G., G.L.G., D.S., T.R., M.R., D.W., P.S.W.), Centre Intégré de Santé et des Services Sociaux de l'Outaouais, Gatineau, QC (K.A.-N.), Jewish General Hospital, Lady Davis Institute for Medical Research, McGill University, Montreal (V.T.), Nova Scotia Health Authority, Halifax (S. Shivakumar), Lakeridge Health, Oshawa, ON (A.S.), William Osler Health Centre, Brampton, ON (P.K.), Sault Area Hospital, Sault Ste. Marie, ON (D.H., S. Spadafora), Hôpital Régional de Rimouski, Rimouski, QC (K.M.), Markham Stouffville Hospital, Markham, ON (M.T.), Kingston General Hospital, Kingston, ON (A.T.), University of British Columbia, British Columbia Cancer Agency, Vancouver (A.Y.Y.L.), Hamilton Health Sciences, Hamilton, ON (P.L.G.), London Health Sciences Centre, London, ON (A.L.-L.), and Royal Victoria Regional Health Centre, Barrie, ON (R.E.-M.) - all in Canada
| | - Philip S Wells
- From the Department of Medicine, University of Ottawa, Ottawa Hospital Research Institute, Ottawa (M.C., R.M., G.G., G.L.G., D.S., T.R., M.R., D.W., P.S.W.), Centre Intégré de Santé et des Services Sociaux de l'Outaouais, Gatineau, QC (K.A.-N.), Jewish General Hospital, Lady Davis Institute for Medical Research, McGill University, Montreal (V.T.), Nova Scotia Health Authority, Halifax (S. Shivakumar), Lakeridge Health, Oshawa, ON (A.S.), William Osler Health Centre, Brampton, ON (P.K.), Sault Area Hospital, Sault Ste. Marie, ON (D.H., S. Spadafora), Hôpital Régional de Rimouski, Rimouski, QC (K.M.), Markham Stouffville Hospital, Markham, ON (M.T.), Kingston General Hospital, Kingston, ON (A.T.), University of British Columbia, British Columbia Cancer Agency, Vancouver (A.Y.Y.L.), Hamilton Health Sciences, Hamilton, ON (P.L.G.), London Health Sciences Centre, London, ON (A.L.-L.), and Royal Victoria Regional Health Centre, Barrie, ON (R.E.-M.) - all in Canada
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