1. Center for Health Evaluation and Outcome Sciences, St Paul’s Hospital and University of British Columbia, Vancouver, BC, Canada;
2. Fraser Health Authority, Surrey, BC, Canada
3. Nursing Care Research Center, Iran University of Medical Sciences, Tehran, Iran
4. Department of Medicine, McMaster University, Hamilton, ON, Canada
5. Department of Family Medicine, Providence Health Care, Vancouver, BC, Canada
6. Division of Critical Care Medicine and Center for Health Evaluation and Outcome Sciences, St Paul’s Hospital and University of British Columbia, Vancouver, BC, Canada