Funding for this research was provided by:
National Medical Research Council (NMRC/HSRG/0057/2016)
Lien Centre for Palliative Care (LCPC-IN16–0004)
Received: 7 August 2020
Accepted: 13 January 2021
First Online: 29 January 2021
Ethics approval and consent to participate
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee (Centralized Institutional Review Board of the Singapore Health Services #2016/2243) and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. Informed consent was obtained from all individual participants included in the study.
: All authors declare that they have no potential conflict of interest.