1. Department of Biomedical, Surgical and Dental Sciences; Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico; University of Milan; Milan Italy
2. EPIGET-Epidemiology, Epigenetics and Toxicology Lab; Department of Clinical Sciences and Community Health; University of Milan; Milan Italy
3. Epidemiology Unit; Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico; Milan Italy
4. Laboratory of Epithelial Biology; University of Michigan School of Dentistry; Ann Arbor MI USA
5. Department of Periodontics and Oral Medicine; School of Dentistry; University of Michigan; Ann Arbor MI USA
6. Private Practice; Piacenza Italy