Funding for this research was provided by:
National Healthcare Group (SIG/14030)
National Medical Research Council (NMRC/CG/M002/2017, NMRC/CG/C019B/2017)
Text and Data Mining valid from 2019-12-01
Received: 4 June 2019
Accepted: 12 November 2019
First Online: 2 December 2019
Ethics approval and consent to participate
: Ethical approval for the conduct of the study was given by the National Healthcare Group Domain Specific Review Board, Singapore. All participants provided written, informed consent for participation in the study.
: The authors declare that they have no competing interests.