Funding for this research was provided by:
Geriatric Education and Research Institute (GERI 1621)
Received: 28 April 2020
Accepted: 13 July 2020
First Online: 21 July 2020
Ethics approval and consent to participate
: The research protocol was approved by the National Healthcare Group Domain Specific Review Board (Singapore) with reference number DSRB 2018/00590. All recruited subjects provided signed informed consent for this study.
: Both consent form from the BDJ trainers and the participants are all available.
: The authors declare that they have no competing interests.