1. Department of Cardiologic, Thoracic, and Vascular Sciences; Thoracic Surgery Unit; University of Padova; Padova Italy
2. Division of Thoracic Surgery; University “Sapienza”-Sant'Andrea Hospital; Rome Italy
3. Division of Thoracic Surgery; University “Sapienza,” Policlinico Umberto I; Rome Italy
4. Lorillard-Spencer-Cenci Foundation; Rome Italy
5. Division of Thoracic Surgery; Department of Surgery; Medical University of Vienna; Comprehensive Cancer Center; Vienna Austria
6. Department of Vascular and Thoracic Surgery; Regional General Hospital of Bolzano; Bolzano Italy