1. Division of Periodontology Department of Dentistry National Taiwan University Hospital Hsin‐Chu Branch Hsinchu Taiwan
2. Graduate Institute of Clinical Dentistry School of Dentistry College of Medicine National Taiwan University Taipei Taiwan
3. Division of Prosthodontics Department of Dentistry National Taiwan University Hospital Hsin‐Chu Branch Hsinchu Taiwan
4. Division of Periodontology Department of Dentistry Chang Gung Memorial Hospital Linkou Main Branch and Chang Gung University Taoyuan City Taiwan
5. School of Dentistry College of Medicine National Taiwan University Taipei Taiwan
6. Department of Orthopedics China Medical University Hospital Taichung City Taiwan
7. Department of Medical Research National Taiwan University Hospital Taipei Taiwan