S Rabiou1, I Issoufou2, L Belliraj2, F Z Ammor2, M Lakranbi2, Y Ouadnouni3, M Smahi3. 1. From the Department of Thoracic Surgery, University Hospital Hassan II, Fez, Morocco rabiousani2@yahoo.fr. 2. From the Department of Thoracic Surgery, University Hospital Hassan II, Fez, Morocco. 3. From the Department of Thoracic Surgery, University Hospital Hassan II, Fez, Morocco Faculty of Medicine and Pharmacy, Sidi Mohamed Ben Abdellah University, Fez, Morocco.