1. Department of Periodontology, Endodontology, and Cariology, University of Basel, Hebelstrasse 3, CH-4056, Basel, Switzerland
2. Department of Oral Surgery, Oral Radiology, and Oral Medicine, University of Basel, Hebelstrasse 3, CH-4056, Basel, Switzerland
3. Department for Reconstructive Dentistry and TMJ Disorders, University of Basel, Hebelstrasse 3, CH-4056 Basel, Switzerland, and Institute for Clinical Epidemiology, Basel University Hospital, Hebelstrasse 10, 3rd Floor, CH-4031 Basel, Switzerland