1. Department of Prosthodontics, School of Dental Medicine Tufts University School of Dental Medicine Boston Massachusetts USA
2. Department of Public Health and Community Service Tufts University School of Dental Medicine Boston Massachusetts USA
3. Department of Restorative Dentistry, School of Dentistry University of Washington Seattle Washington USA
4. Faculty and Director of Research and Digital Dentistry Kois Center Seattle Washington USA
5. Center for Dental Medicine, Department of Prosthetic Dentistry, ,Faculty of Medicine University of Freiburg Freiburg Germany
6. Private Practice The Face Dental Group Boston Massachusetts USA