Received: 6 October 2018
Accepted: 17 June 2019
First Online: 5 July 2019
Ethics approval and consent to participate
: The study was approved by the SingHealth Centralised Institutional Review Board on August 8th, 2017 (reference number: 2017/2667). Documented, signed informed consent was not deemed necessary for this anonymous survey. Eligible individuals were asked to provide their informed consent by checking a box on the online survey form before starting the survey.
: Not applicable.
: The authors declare that they have no competing interests.