| Affiliation: | 1. Department of Life, Health and Environmental Sciences, University of L'Aquila, L'Aquila, Italy;2. Center for Clinical Research and Evidence Synthesis in Oral Tissue Regeneration (CRITERION), Boston, Massachusetts, USA;3. Clinic of Reconstructive Dentistry, University of Zurich, Zurich, Switzerland;4. Department of Restorative Dentistry and Biomaterial Science, Harvard School of Dental Medicine, Boston, Massachusetts, USA;5. Department of Periodontics & Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, Michigan, USA |
