Funding for this research was provided by:
Research Grants Council, University Grants Committee (GRF 17119916)
Text and Data Mining valid from 2020-04-06
Received: 26 December 2019
Accepted: 20 March 2020
First Online: 6 April 2020
Ethics approval and consent to participate
: Ethics approval was obtained from Institutional Review Board of the University of Hong Kong/Hospital Authority Hong Kong West Cluster (HKU/HA HKWC IRB), IRB Reference Number UW 16–325. The study is a retrospective study involving human data that has already been collected and did not require additional recruitment of human subjects, waiving the need for informed consent and done in accordance with the regulations set by the IRB.
: Not applicable.
: The authors declare they have nothing to disclose.