Funding for this research was provided by:
National Medical Research Council (NMRC/CSSSP/0022/2017)
Text and Data Mining valid from 2020-05-01
Received: 15 February 2020
Accepted: 13 April 2020
First Online: 1 May 2020
Ethics approval and consent to participate
: This study was carried out under the approval of the Centralized Institutional Review Board of the Singapore Health Services. Informed consent was obtained from all patients prior to participation in the study.
: Not applicable.
: The authors declare that they have no competing interests.