1. Department of Dentistry; Shuang-Ho Hospital; Taipei Medical University; New Taipei City Taiwan
2. School of Dentistry; National Yang-Ming University; Taipei Taiwan
3. School of Dentistry; College of Oral Medicine; Taipei Medical University; Taipei Taiwan
4. Taiwan Dental Health Care Organization; Taipei Taiwan
5. Department of Health Industry Management; Kainan University; Tao-Yuan Taiwan
6. Department of Health Care Management; College of Management; Chang Gung University; Tao-Yuan Taiwan