1. Division of Prosthodontics, Department of Dentistry; Chi Mei Medical Center; Tainan Taiwan
2. Division of Prosthodontics, Department of Dentistry; Chi Mei Medical Center; Liouying Tainan Taiwan
3. Division of Periodontics, Department of Dentistry; Chi Mei Medical Center; Tainan Taiwan
4. Division of Postgraduate Prosthodontics; Tufts University School of Dental Medicine; Boston MA
5. Department of Prosthodontics, Eastman Institute for Oral Health; University of Rochester; Rochester NY