Department of Community Health;
Faculty of Medicine and Health Sciences;
University Putra Malaysia;
Selangor 43400;
Malaysia;
Department of Technology Management;
Faculty of Manufacturing Engineering and Technology Management;
Universitiy Malaysia Pahang;
Lebuh Raya Tun Razak;
Gambang;
Kuantan;
Pahang 26300;
Malaysia;
School of Dental Sciences;
University Sains Malaysia;
Kelantan 16150;
Malaysia;
Institute of Medicine;
University Brunei Darussalam;
Jalan Tungku Link;
Gadong BE 1410;
Brunei Darussalam;
School of Medicine and Health Sciences;
Monash University;
Johor Bahru 80100;
Malaysia;
Department of Community Health;
Faculty of Medicine;
University Kebangsaan Malaysia;
Kuala Lumpur 56000;
Malaysia;
International Institute for Global Health;
United Nation University;
UKM Medical Centre;
Kuala Lumpur 56000;
Malaysia;