Zin, Noraziah Mohamad
Ishak, Ismarulyusda
Manoharan, Kasturi
Article History
First Online: 13 June 2019
Ethics approval and consent to participate
: This study has obtained approval from Research Ethics, The National University of Malaysia (UKM) with reference number of (UKM PPI/111/8/JEP-2017-655). A written informed consent was taken prior to answering the questionnaire. In addition, an informed consent for legal guardian was given for participants below 18 years old.
: Not applicable.
: The authors declare that they have no competing interest.
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