1. Division of Supportive and Palliative Care, National Cancer Centre Singapore, Level 4, 11 Hospital Crescent, Singapore 169610, Singapore
2. Lien Centre for Palliative Care, Duke-NUS Medical School, Singapore, Singapore
3. Division of Supportive and Palliative Care, National Cancer Centre Singapore, Singapore, Singapore
4. Nursing Specialty Care Unit, National Heart Centre Singapore, Singapore, Singapore
5. Programme in Health Services and Systems Research, Duke-NUS Medical School, Singapore, Singapore