1. School of Nursing, Trinity Western University , Langley, British Columbia , Canada
2. Centre for Health Evaluation and Outcome Sciences, Providence Health Care Research Institute , Vancouver, British Columbia , Canada
3. British Columbia Office of Patient-Centred Measurement, British Columbia Ministry of Health , Vancouver, British Columbia , Canada
4. Boston University School of Public Health, Department of Health Law, Policy & Management , Boston, Massachusetts , USA
5. Department of Pulmonary Medicine and Rehabilitation, Harvard Medical School , Boston, Massachusetts , USA