1. Restorative Dentistry and Biomaterials and Biomechanics, Oregon Health & Science University, 611 W. Campus Drive, Portland, OR 97239, USA
2. Université Claude Bernard Lyon I, Faculté d’Odontologie, 11, Rue Guillaume Paradin, 69372 Lyon Cedex 08, France
3. FDI World Dental Federation, Avenue Louis Casai 84, Case Postale 3, CH-1216 Cointrin, Geneva, Switzerland
4. International Association for Dental Research, 1619 Duke Street, Alexandria, VA 22314, USA