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Authors
Wu, Lingli
Gao, Xiaoli
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Funding
Funding for this research was provided by:
Faculty of Dentistry, The University of Hong Kong
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Article History
Received: 25 January 2018
Accepted: 22 May 2018
First Online: 4 June 2018
Ethics approval and consent to participate
: The protocol of this study was reviewed by the Institutional Review Board (IRB) of the University of Hong Kong/Hospital Authority Hong Kong West Cluster. An ethical approval was obtained (#UW16–130). Informed written consent was taken from both parents of each participating child.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
