1. Department of Community Medicine, Business of Administration Healthcare Management, School of Medicine, International Medical University Malaysia, Kuala Lumpur, Malaysia.
2. Emergency Department, KPJ Selangor Specialist Hospital, Shah Alam, Malaysia.
3. Department of Community Health, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia.
4. Department of Community Medicine, School of Medicine, International Medical University Malaysia, Kuala Lumpur, Malaysia.