Funding for this research was provided by:
National Medical Research Council (NMRC/CNIG/1173/2017, TCMRG/NNI310301)
Article History
Received: 16 July 2019
Revised: 30 January 2020
Accepted: 31 January 2020
First Online: 4 May 2020
Compliance with ethical standards
:
: On behalf of all authors, the corresponding author states that there is no conflict of interest.
: This retrospective review was carried out with waiver of consent by the SingHealth Centralized Institutional Review Board.