Funding for this research was provided by:
SingHealth Foundation Health Services Research (Aging) Start-up Grant (SHF/HSRAg004/2015)
SingHealth Nurturing Clinician Scientist Award Academic Clinical Programme Funding (FY 2016 Cycle 2)
Received: 25 September 2018
Accepted: 27 March 2019
First Online: 15 April 2019
Ethics approval and consent to participate
: Approval from Singapore Health Services Centralized Institutional Review Board (CIRB reference number: 2016/2294) was obtained prior to commencement of study. Waiver of consent was obtained and approved by the committee for this study. Permission was also obtained from the hospitals and polyclinics for access to de-identified data from patient medical records.
: Not applicable.
: The authors declare that they have no competing interests.
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