1. Clinic for Oral and Cranio-Maxillofacial Surgery, Hightech Research Center, University Hospital Basel, University of Basel, Basel, Switzerland.
2. Clinic for Oral and Cranio-Maxillofacial Surgery, Cantonal Hospital Aarau, Aarau, Switzerland.
3. Clinic for Preventive Dentistry and Oral Microbiology, University Center for Dental Medicine Basel, University of Basel.
4. Center of Biomechanics & Biocalorimetry, University of Basel.
5. Department of Urology, University Hospital Basel, University of Basel.
6. Professorship for Demography, University of Bamberg, Bamberg, Germany.
7. Private practice, Munich, Germany.