1. Department of Thoracic Surgery, San Giovanni Battista Hospital, University of Torino, Italy
2. Department of Thoracic Surgery, North University Hospital, University of the Mediterranean, & University Hospital System of Marseille, Marseille, France
3. St James University Hospital, Department of Thoracic Surgery, Leeds, UK
4. Royal Brompton Hospital, London, UK
5. Department of Thoracic Surgery, University Hospital, Valladolid, Spain
6. Division of Thoracic Surgery, National Cancer Center Hospital, Tokyo, Japan
7. UPMC/University of Pittsburgh Schools of the Health Sciences, Pittsburgh, PA, USA
8. University of Rome Sapienza, Fondazione Eleonora Lorillard Spencer Cenci, Policlinico Umberto I, Rome, Italy