1. Institute of Public Health, National Yang-Ming University, Taipei, Taiwan,
2. Department of Pediatric, Mackay Memorial Hospital, Hsin-Chu, Taiwan,
3. Graduate Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, Taipei, Taiwan,
4. School of Oral Hygiene, College of Oral Medicine, Taipei Medical University, Taipei, Taiwan,
5. Department of Health Industry Management, School of Healthcare Management, Kainan University, Tao-Yuan, Taiwan, and
6. Department of Health Care Management, College of Management, Chang Gung University, Tao-Yuan, Taiwan