1. From the Departments of Medical Oncology, Pulmonary Medicine, and Biostatistics, School of Medicine, University of Crete, Heraklion, Crete; Department of Clinical Therapeutics, School of Medicine, University of Athens, Athens; First Department of Pulmonary Medicine, General Hospital for Pulmonary Diseases, Athens; and Second Department of Pulmonary Medicine, Sismanoglion General Hospital, Athens, Greece.