1. Oncology Institute of Vojvodina, Clinic for Oncological Surgery, Department of Anesthesiology, Intensive Therapy and Care, Sremska Kamenica, Serbia
2. Oncology Institute of Vojvodina, Clinic for Oncological Surgery, Department of Anesthesiology, Intensive Therapy and Care, Sremska Kamenica, Serbia + University of Novi Sad, Faculty of Medicine, Novi Sad, Serbia
3. University of Novi Sad, Faculty of Medicine, Novi Sad, Serbia + Oncology Institute of Vojvodina, Clinic for Oncological Surgery, Department of Surgery, Sremska Kamenica, Serbia