Sim, D.S. http://orcid.org/0000-0002-7716-0980
Tay, K. http://orcid.org/0000-0003-3841-9651
Howe, T.S. http://orcid.org/0000-0002-2933-6830
Koh, S.B.J. http://orcid.org/0000-0003-4135-0288
Article History
Received: 27 October 2020
Accepted: 19 April 2021
First Online: 7 May 2021
Declarations
:
: This study involves human data, and institutional review board approval was obtained (Singhealth CIRB 2015/2134) before the start of this single-centre retrospective cohort study. All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. Waiver of consent was approved for this type of retrospective study with anonymized patient records.
: None.