Funding for this research was provided by:
National University Health System (NUHS) Singapore Population Health Improvement Centre (NMRC/CG/C026/2017_NUHS)
National Medical Research Council of Singapore (NMRC/HSRG/0080/2017)
Received: 31 January 2019
Accepted: 1 August 2019
First Online: 14 August 2019
Ethics approval and consent to participate
: Ethical approval for the study was obtained from the SingHealth Centralised Institutional Review Board (CIRB). Informed consent for participation was obtained from all participants via a Participation Information Sheet and Consent Form.
: Not Applicable
: The authors declare that they have no competing interests.