Funding for this research was provided by:
Health and Medical Research Fund (12110992)
Received: 18 February 2020
Accepted: 16 June 2020
First Online: 23 June 2020
Ethics approval and consent to participate
: Informed consent and ethnics approval were obtained for all participants in this study. The collection of patients’ peripheral blood was approved by the HKU/HA HKW Institutional Review Board (UW 10–430 and 15–026). No animals are used in this study.
: Not applicable.
: The authors declare that they have no competing interests.