Funding for this research was provided by:
University Postgraduate Programme (201708180008)
Received: 9 December 2020
Accepted: 1 March 2021
First Online: 12 March 2021
: The study protocol received approval from, and was executed in exact accordance with, the ethical guidelines set forth by the University Clinical Research Ethics Board in accordance with the Declaration of Helsinki for research involving human participants. The experimental procedures and risks were explained to participants both verbally and in writing, and written informed consent and assent were obtained from parents and children prior to study participation.
: Not applicable.
: The authors declare that they have no competing interests.