1. Department of Emergency Medicine, Far Eastern Memorial Hospital, No.21, Sec. 2, Nanya S. Rd., Banciao Dist., New Taipei City 22056, Taiwan
2. Department of General Dentistry, Chang Gung Memorial Hospital, Linkou 33305, Taiwan
3. School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 11031, Taiwan
4. Graduate Institute of Dental and Craniofacial Science, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
5. Graduate Institute of Medicine, Yuan Ze University, Taoyuan 32003, Taiwan