1. Dental Clinic; Department of Biomedical, Surgical and Dental Sciences; IRCCS Istituto Ortopedico Galeazzi; Università degli Studi di Milano; Milan Italy
2. Faculty of Dentistry; University of Hong Kong; Hong Kong China
3. Department of Endodontology; Maurice and Gabriela Goldschleger School of Dental Medicine; Tel Aviv Israel
4. Department of Periodontology and Dental Implantology; Maurice and Gabriela Goldschleger School of Dental Medicine; Tel Aviv Israel