1. Clinical Research Unit (CRU), Centro de Investigação Interdisciplinar Egas Moniz (CiiEM) Egas Moniz, CRL Monte de Caparica Portugal
2. Unit of Basic Oral Investigation (UIBO), School of Dentistry Universidad El Bosque Bogota Colombia
3. Department of Periodontics, School of Dentistry The University of Pennsylvania Philadelphia Pennsylvania USA
4. Department of Biomedical and Neuromotor Sciences University of Bologna Bologna Italy