@ARTICLE{
author={Popa Calin,...,Skrobic Ognjan M,Simic Aleksandar P,...,(broj koautora 107)},
year={2025},
title={Education and training of surgical residents in upper gastrointestinal surgery: a European survey},
journal={UPDATES IN SURGERY},
volume={},
number={},
pages={-},
document_type={Article; Early Access},
} 

@ARTICLE{
author={Popa Calin,Schlanger Diana,Aiolfi Alberto,Elshafei Moustafa,Triantafyllou Tania,Theodorou Dimitrios,Skrobic Ognjan M,Simic Aleksandar P,Al Hajjar Nadim,Bonavina Luigi},
year={2025},
title={Biomarkers associated with anastomotic leakage after esophagectomy: a systematic review},
journal={LANGENBECKS ARCHIVES OF SURGERY},
volume={410},
number={1},
pages={-},
document_type={Review},
}