1. Department of Thoracic Surgery, University Hospital of Wales , Cardiff, UK
2. Umberto I General Hospital , Siracusa, Sicily, Italy
3. Department of Thoracic Surgery, St Bartholomews Thorax Centre , London, UK
4. Minimally Invasive Thoracic Surgery and New Technologies, Policlinic University Hospital and Department of General Surgery and Medical Specialties, University of Catania , Catania, Italy