Funding for this research was provided by:
Fakulti Perubatan dan Sains Kesihatan, Universiti Putra Malaysia (UPM/700-2/1/GP-IPS/2018/9593800, UPM/800-3/3/1/GPB/2018/9659600, UPM/SPS/GS48750)
Text and Data Mining valid from 2019-10-21
Received: 16 January 2019
Accepted: 20 September 2019
First Online: 21 October 2019
Ethics approval and consent to participate
: The ethics approval was obtained from the Medical Research Ethics Committee (MREC), Ministry of Health Malaysia (NMRR-17-2264-37814). Written consent was obtained from the respondents prior to the data collection.
: Not applicable.
: The authors declare that they have no competing interests.