1. Division of Hematology/Oncology, Department of Medicine, Hollings Cancer Center, Medical University of South Carolina, Charleston, SC 29425, USA.
2. Azienda Unità Sanitaria Locale della Romagna, Ravenna 48100, Italy.
3. Medical Oncology Department, Istituto Toscano Tumori, Ospedale Civile di Livorno, Viale Alfieri 36, Leghorn 57100, Italy.
4. Division of Thoracic Surgery, Kanazawa Medical University, 1-1 Daigaku, Uchinada 920-0293, Japan.
5. Department of Thoracic Oncology, Moffitt Cancer Center, Tampa, FL 33612, USA.
6. Department of Public Health Sciences, Hollings Cancer Center, Medical University of South Carolina, Charleston, SC 29425, USA.