Ibrahim, I.
Macatangay, R.
Chai, C. Y.
Khoo, C. M.
Mahadevan, M.
Article History
Received: 15 February 2021
Accepted: 13 May 2021
First Online: 30 May 2021
Declarations
:
: We have received ethical approval (2016/01337) from the National Healthcare Group Domain Specific Review Board (NHG DSRB). Our affiliation, the National University Hospital is one of the NHG institutions. The NHG DSRB oversees and approves all research involving patients, staff, premises, or facilities of NHG institutions prior to initiation. Since this study does not contain protected health information and all data were anonymously used, a waiver of the requirement for informed consent was approved by the NHG DSRB. Individual patient consent was not obtained since all data used in this study were acquired retrospectively. All methods were performed in accordance with the relevant guidelines and regulations.
: Not applicable.
: The authors declare that they have no competing interests.