University of Bochum (MD 1991)
Center for Thoracic Diseases Herne-Bochum, Fellow (1991 - 1997)
University of Heidelberg, Department of Thoracic Surgery, Consultant (1998 - 2003)
Klinikum Bremen, Chairman, Department of Thoracic Surgery (2003 - 2008)
Thoraxzentrum Ruhrgebiet, Chairman, Department of Thoracic Surgery (2008 -)
University of Chengdu, Professor of Thoracic Surgery (2013 -)
Videoassisted Thoracic Surgery for Lung Cancer
Videoassisted Thoracic Surgery for Mediastinal Tumors
Lung Emphysema - endobronchial and thoracoscopic treatment
Ultrasound - bronchial/esophageal/mediastinal/pulmonary
Thoracoscopic Esophageal Surgery
Adult and Pediatric Tracheal and Bronchial Tree Surgery
Malignant Pleuramesothelioma
LASER Surgery for Lung Metastasis