1. Department of Community Health, Faculty of Medicine, Universiti Kebangsaan Malaysia, Jalan Yaakob Latif, 56000 Cheras, Kuala Lumpur, Malaysia
2. Health Services Division, Malaysian Armed Forces Headquarters, JalanTekpi, Off Jalan Padang Tembak, 50634 Kuala Lumpur, Malaysia
3. Ministry of Health (Malaysia), Federal Government Administrative Centre, 62514 Putrajaya, Malaysia