1. Department of Thoracic Surgery, University of Perugia Medical School, I‑06134 Perugia, Italy
2. Institute of Pathological Anatomy and Histology, University of Perugia Medical School, I‑06134 Perugia, Italy
3. Department of Veterinary Medicine, University of Perugia, I‑06134 Perugia, Italy
4. Thoracic Surgery, Department of Medical and Surgical Sciences (DIMEC), Alma Mater Studiorum, University of Bologna, I‑40126 Bologna, Italy