[1] Hirslanden Med Ctr, Craniofacial Ctr CFC, CH-5000 Aarau, Switzerland
[2] Hannover Med Sch, Dept Oral & Maxillofacial Surg, Hannover, Germany
[3] Brainlab AG, Feldkirchen, Germany
[4] Hirslanden Head Off, Zurich, Switzerland
[5] Hirslanden Med Ctr, Dept Radiotherapy, CH-5000 Aarau, Switzerland
[6] Hirslanden Med Ctr, Dept Pathol, CH-5000 Aarau, Switzerland
[7] Philips AG, Zurich, Switzerland