Authors
Emil T. Filipov
Clinic of Coloproctology and Septic Surgical Complications, Dr. Georgi Stranski University Hospital - Pleven
Tsvetomir M. Ivanov
Clinic of surgical oncology, Dr. Georgi Stranski University Hospital - Pleven Department of Surgical Diseases, Medical University – Pleven Department of Surgical Propaedeutics, Medical University – Pleven