Funding for this research was provided by:
National Medical Research Council (NMRC/CG/004/2013)
Text and Data Mining valid from 2020-04-29
Received: 17 June 2019
Accepted: 16 April 2020
First Online: 29 April 2020
Ethics approval and consent to participate
: Ethical approval for the study was obtained from the National Healthcare Group of Singapore Domain Specific Review Board (DSRB) and the Institute of Mental Health Clinical Research Committee (CRC). Written informed consent was obtained from all participants or from a legally recognised representative/ next-of-kin if participants were below 21 years of age. All data were collected in accordance with the ethical standards of both DSRB and CRC.
: Not applicable.
: The authors declare that they have no competing interests.