Funding for this research was provided by:
Ministry of Education - Singapore (MOE 2016-T3-1-004, R-397-000-274-112, R-397-000-348-114)
MOH | National Medical Research Council (NMRC/OFIRG/0071/2018, R-397-000-317-213)
Article History
Received: 4 December 2018
Accepted: 21 October 2021
First Online: 13 January 2022
Competing interests
: The authors declare no competing interests.