1. Abdominal Surgery and Phlebology Research Center, Victor Babeș University of Medicine and Pharmacy, 300041 Timisoara, Romania
2. 1st Surgical Department, Pius Brînzeu Emergency County Hospital, 300736 Timisoara, Romania
3. Department of Microscopic Morphology/Histology, Angiogenesis Research Center, Victor Babeș University of Medicine and Pharmacy, 300041 Timisoara, Romania
4. Department of Vascular Surgery, Military Academy, Cairo 1000, Egypt
5. Vascular Surgery Clinic, Institute for Cardiovascular Diseases “Dedinje”, 11040 Belgrade, Serbia
6. Faculty of Medicine, University of Belgrade, 11120 Belgrade, Serbia
7. Department of Plastic and Reconstructive Surgery, Victor Babeș University of Medicine and Pharmacy, 300041 Timisoara, Romania