1. St. Mary's Hospital, Kurume, Japan.
2. Department of Healthcare Administration and Management, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.
3. Department of Health Sciences, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan.
4. Health Administration Program, Department of International Business and Management, Universiti Teknologi MARA, Shah Alam, Malaysia.