1. School of Nursing and Midwifery, Queen's University Belfast, Belfast, Northern Ireland, United Kingdom.
2. McMaster Children's Hospital, Hamilton, Ontario, Canada.
3. Department of Pediatrics, McMaster University, Hamilton, Ontario, Canada.
4. Division of Palliative Care, McMaster University, Hamilton, Ontario, Canada.
5. Department of Family Medicine, McMaster University, Hamilton, Ontario, Canada.
6. School of Nursing, McMaster University, Hamilton, Ontario, Canada.
7. Department of Clinical Epidemiology and Biostatistics, McMaster University, Hamilton, Ontario, Canada.
8. Hamilton Health Sciences, Hamilton, Ontario, Canada.