1. Department of Surgery, Ramnicu Sarat County Hospital, 125300 Ramnicu Sarat, Romania
2. Department of Internal Medicine, ‘Carol Davila’ University of Medicine and Pharmacy, 020021 Bucharest, Romania
3. Department of Thoracic Surgery, ‘Carol Davila’ University of Medicine and Pharmacy, 020021 Bucharest, Romania
4. Department of Cardiovascular Surgery, ‘Carol Davila’ University of Medicine and Pharmacy, 020021 Bucharest, Romania
5. Department of Obstetrics and Gynecology, ‘Carol Davila’ University of Medicine and Pharmacy, 020021 Bucharest, Romania
6. Department of Visceral Surgery, ‘Ponderas’ Academic Hospital, 021188 Bucharest, Romania