[1] Univ Hosp "Maggiore Carita", Univ Eastern Piedmont, Div Maxillofacial Surg, Novara, Italy
[2] Hasanuddin Univ, Dept Oral, Maxillofacial Surg, Makassar, Indonesia
[3] Univ Med Ctr, Dept Oral, Maxillofacial Surg, Oral Pathol, Amsterdam, Netherlands
[4] Hosp Universitario Cent Asturias, Servicio Cirugia Maxilofacial, Oviedo, Spain
[5] Univ Hosp Dubrava, Dept Maxillofacial Surg, Zagreb, Zagreb, Croatia
[6] Med Univ, Fac Dent Med, Dept Oral Surg, Plovdiv, Bulgaria
[7] Univ Piemonte Orientale, Private practice oral Surg, Plovdiv, Bulgaria
[8] Med Univ, Fac Dent Med, Dept maxillofacial Surg, Plovdiv, Bulgaria
[9] N Estonia Med Centre Fdn, Dept maxillo, facial Surg, Tallinn, Estonia
[10] Univ Tartu, Fac Med, Tartu, Estonia
[11] Bogomolets Natl Med Univ, Stomatol Med Ctr, Kiev, Kiev, Ukraine
[12] Univ, Kyiv City Clin Emergency Hosp, Bogomolets Natl Med, Kiev, Kiev, Ukraine
[13] Div Maxillofacial Surg, Chu Nantes, Nantes, France
[14] Univ Med Centre, Dept Maxillofacial, Oral Surg, Ljubljana, Slovenia
[15] Univ Belgrade, Sch Dent Med, Dept Maxillofacial Surg, Belgrade, Belgrade, Serbia
[16] Aalborg Univ Hosp, Dept Oral, Maxillofacial Surg, Aalborg, Denmark