1. Department of Integral Adult Dentistry, Faculty of Dentistry, Research Centre in Oral Biology Universidad de La Frontera Temuco Chile
2. Department of Endodontics, Maurice and Gabriela Goldschleger School of Dental Medicine Tel Aviv University Tel Aviv Israel
3. Department of Biomedical, Surgical and Dental Sciences Università degli Studi di Milano Milan Italy
4. IRCCS Orthopedic Institute Galeazzi Milan Italy