Funding for this research was provided by:
ngee ann polytechnic
Received: 2 August 2021
Accepted: 26 October 2021
First Online: 25 April 2022
: There were no informed consent obtained in this study. This study was approved with waiver of informed consent for study subjects by the National Healthcare Group Domain Specific Review Board (NHG DSRB Ref: 2018/01383). All experiments were performed in accordance with relevant guidelines and regulations.
: Not applicable.
: The authors declare no competing interest.