Received: 5 December 2019
Accepted: 16 August 2020
First Online: 26 August 2020
Ethics approval and consent to participate
: The protocol of this trial has been approved by the Joint Chinese University of Hong Kong-New Territories East Cluster Clinical Research Ethics Committee (Reference No.: 2019.460). Any significant amendments of the protocol will be submitted to the ethics committee. Written informed consents will be obtained from each participant prior to data collection.
: Not applicable.
: The authors declare that they have no competing interests.