Funding for this research was provided by:
Theme Based Research Scheme (T12-705/11)
Collaborative Research Fund (HKU2/CRF/12R)
Text and Data Mining valid from 2019-12-01
Received: 20 September 2019
Accepted: 3 December 2019
First Online: 17 December 2019
Ethics approval and consent to participate
: This study was approved by the Institutional Review Board of the University of Hong Kong/Hospital Authority Hong Kong West Cluster. Written informed consent was obtained from all participants.
: Not applicable.
: The authors declare that they have no competing interests.