Prof. Dr Novi Sad, Serbia
Prof. Dr Paris, France
Prof. Dr Sarajevo, Bosnia and Herzegovina
Prof Manchester, United Kingdom
MD Novi Sad, Serbia
MD, PhD Novi Sad, Serbia
Dr Milan, Italy
MD, PhD Barcelona, Spain
Prof Dr Boston, USA
Dr Cluj – Napoca, Romania
PhD Hamburg, Germany
PhD Slovenia
MD PhD Belgrade, Serbia
Prof. Dr Stockholm, Sweden
Dr sc med dr Belgrade, Serbia
Dr Madrid, Spain
Dr Stochkolm, Sweden
MD PhD Maribor, Slovenia
Prof. Dr Belgrade, Serbia
MD, PhD, Msc Madrid, Spain
Dr GI- oncologist Belgrade, Serbia
Dr Timisoara, Romania
Prof. dr sc med Novi Sad, Serbia
Dr Podgorica, Montenegro
Dr Novi Sad, Serbia
Dr Niš, Serbia
Prof Dr Serbia
