1. Pulmonary Medicine Department, SLK Loewenstein Lung Center, Lowenstein, Germany
2. Pulmonary Medicine Department, Mansoura University, Mansoura, Egypt
3. Thoracic Surgery Department, SLK Loewenstein Lung Center, Lowenstein, Germany
4. Thoracic Radiology Department, SLK Loewenstein Lung Center, Lowenstein, Germany
5. Pathology Department, SLK Medical Hospital, Heilbronn, Germany