Authors
S. Sopotenski
Department of Surgery, UMHATEM “N. I. Pirogov” – Sofia, Bulgaria
D. Vrachanski
Department of Thoracic Surgery, University Hospital “Sofiamed” – Sofia, Bulgaria
A. Tchervenyakov
Department of Surgery, UMHATEM “N. I. Pirogov” – Sofia, Bulgaria
Department of Thoracic Surgery, University Hospital “Sofiamed” – Sofia, Bulgaria
