Ethics approval and consent to participate
WEST
All experimental protocols were approved by the Institutional Review Board (IRB) of the University of Hong Kong/Hospital Authority, Hong Kong West Cluster (IRB reference: UW 17–058). A formal consent process was undertaken with all the donors participated in this study after receiving complete information on the study protocol, risks, benefits, and data confidentiality details. Informed consent was obtained from all the participants and/or their legal guardian(s).