1992–1995
ORL, Head and Neck Surgery University clinics in Erlangen.

1995–2000
Senior Physician Department of ORL, Head and Neck Surgery, Saarland University in Homburg/Saar.

2000–2003
Senior Physician, Department of ORL, Head and Neck Surgery University Clinics in Erlangen.

2003–2014
Full professor, Department of ORL, Head and Neck Surgery, University Clinics in Erlangen.

More than 150 articles in Medline, several books and book chapters. Special interest in salivary glands and head and neck cancer and ultrasound. Basic investigations for ESWL and ISWL of salivary stones, salivary gland endoscopy.