1 Department of Pulmonary Medicine, Section of Interventional Pulmonology, University Medicine Essen-Ruhrlandklinik, University Duisburg-Essen, West German Lung Center, Essen, Germany; The Ohio State University Comprehensive Cancer Center, Columbus, Ohio. Electronic address: filiz.oezkan@yahoo.de.
2 Centre for Data Analysis, Modeling and Computational Sciences, University of Lodz, Lodz, Poland, (d)Department of Respiratory Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan.
3 The Ohio State University Comprehensive Cancer Center, Columbus, Ohio.