1 School of Nursing, University of Ottawa Heart Institute, 200 Lees Ave, K1S 5S9, Ottawa, Ontario, Canada.
2 University of Ottawa Heart Institute, Ottawa, Ontario, Canada.
3 Nursing Research Institute, St Vincent's Health Network Sydney, St Vincent's Hospital Melbourne, Australian Catholic University, New South Wales, Australia.
4 School of Nursing, University of British Columbia, St. Paul's Hospital, Vancouver, British Columbia, Canada.