1. Oral Medicine Section Department of Surgical Sciences CIR‐Dental School University of Turin Turin Italy
2. Department of Oral Medicine School of Dental Sciences University of Newcastle upon Tyne Newcastle upon Tyne UK
3. Department of Clinical and Biological Sciences Center of Research of Immunopathology and Rare Diseases‐Coordinating Center of the Network for Rare Diseases of Piedmont and Aosta Valley University of Turin Turin Italy