Text and Data Mining valid from 2019-06-01
First Online: 13 June 2019
Ethics approval and consent to participate
: All procedures performed in studies involving human participants were in accordance with the ethical standards of Research Ethics Committee, National University of Malaysia (UKM) and its later amendments or comparable ethical standards, and was approved by the committee with approval number UKM PPI/111/8/JEP/− 2018–267. Verbal consent from the legal guardians of the younger participants was obtained while the university participants verbally gave their consent, as they were already above 18 years old.
: Not applicable.
: The authors declare that they have no competing interests.
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