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Article History

Received: 26 October 2018

Accepted: 18 January 2019

First Online: 30 January 2019

Ethics approval and consent to participate

: Ethical approval for this study has been provided by the Human Research Ethics Committee (HREC) of the Education University of Hong Kong (2015–2016-0149). All participants will be asked to give written consent prior to the beginning of the study. The informed consent form will be sent to the schools whose principals agreed to join. Teachers will help distribute the informed consent forms to all parents via students. Parents will give their consent as to whether they agree to join the survey. Parents will also be required to complete a separate informed consent form for their child. The completed consent forms will be returned to us via teachers. Informed consent forms will also be sent to teachers. After collecting all the consent forms from parents and teachers, questionnaires will be delivered to schools to consenting parents and teachers.

: Not applicable.

: The author declares that she has no competing interests.

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