1. Department of Pulmonary Medicine The University of Texas MD Anderson Cancer Center Houston Texas USA
2. Pulmonary Medicine Mayo Clinic Rochester Minnesota USA
3. Division of Allergy, Pulmonary And Critical Care Medicine Vanderbilt University Nashville Tennessee USA
4. Department of Biostatistics The University of Texas MD Anderson Cancer Center Houston Texas USA
5. Pulmonary Department Nicosia General Hospital Nicosia Cyprus
6. Department of Pathology The University of Texas MD Anderson Cancer Center Houston Texas USA
7. Cytopathology Department Nicosia General Hospital Nicosia Cyprus