@article{Fedorov2022risk, author={Fedorov, N.. and Rybka, A..}, title={Risk Factors of Cholangiocarcinogenesis in Parasitization of a Natural Focal Ecopathogen Helminth <i>Opisthorchis felineus</i>}, journal={Bulletin of Nizhnevartovsk State University}, publisher={Nizhnevartovsk State University}, year={2022}, pages={98-112}, volume={}, issue={4}, }