1. School of Rehabilitation Sciences, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia, and
2. United Nations University-International Institute for Global Health (UNU-IIGH), Kuala Lumpur, Malaysia;
3. Department of Family Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia;
4. Department of Community Health, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia;
5. Department of Health Information, Universiti Kebangsaan Malaysia Medical Centre, Kuala Lumpur, Malaysia and;
6. health economics and
7. United Nations University-International Institute for Global Health, Kuala Lumpur, Malaysia