1. Department of Histology, Microbiology, and Medical Biotechnology, University of Padova, Padova, Italy.
2. Department of Periodontology, School of Dentistry, University of Padova, Padova, Italy.
3. Department of Experimental and Diagnostic Medicine, Section of General Pathology, Interdisciplinary Center for the Study of Inflammation (ICSI) and LTTA Center, University of Ferrara, Ferrara, Italy.
4. Plastic and Reconstructive Surgery Unit, University of Padova, Padova, Italy.