[1] Copenhagen Univ Hosp, Dept Oral & Maxillofacial Surg, Copenhagen, Denmark
[2] Aarhus Univ Hosp, Dept Clin Epidemiol, Aarhus, Denmark
[3] Ludwig Maximilians Univ Munchen, Dept Oral & Maxillofacial Surg, Munich, Germany
[4] UCL, UCL Eastman Dent Inst, London, England
[5] UCL, NIHR UCLH Biomed Res Ctr, London, England
[6] Univ Padua, Dept Neurosci DNS, Reg Ctr Prevent Diag & Treatment Medicat & Radiat, Padua, Italy
[7] Univ Athens, Clin Hosp Dent, Athens, Greece
[8] Univ Hosp Zurich, Diagnost & Intervent Radiol, Zurich, Switzerland
[9] Univ Oslo, Fac Dent, Dept Oral Surg & Oral Med, Oslo, Norway
[10] Oslo Univ Hosp, Unit Oral & Maxillofacial Surg, Dept Otorhinolaryngol, Div Head Neck & Reconstruct Surg, Oslo, Norway
[11] Heidelberg Univ, Dept Oral & Maxillofacial Surg, Heidelberg, Germany