1. From the Departments of Hematology/Oncology and Respiratory Medicine, Thoracic and Cardiovascular Surgery, and Radiation Oncology, Westfälische-Wilhelms Universität, Muenster, Germany; Department of Thoracic Surgery, St. Elisabeth Hospital, Ibbenbüren, Germany; Lungenklinik Hemer, Hemer, Germany; and the Institute of Pathology, University Hospital Bergmannsheil Klinik, Bochum, Germany.