Funding for this research was provided by:
Music Children Foundation
Received: 1 April 2020
Accepted: 18 September 2020
First Online: 25 September 2020
Ethics approval and consent to participate
: This study has been approved by the Institutional Review Board of the University of Hong Kong/ Hospital Authority Hong Kong West Cluster (reference UW16–250). Informed written consent was obtained from the participants after they were told the study’s purposes and details.
: Not applicable.
: Ho Cheung William Li (Corresponding author) is an Associate Editor for BMC Public Health. Other authors declare that they have no competing interests.