Prevalence of opisthorchiasis in the Pavlodar region of the Republic of KazakhstanLyudmila Proskurina, Guli Koltun, Margarita Simakova, Natalia Repsh and Alexander BelovE3S Web Conf., 203 (2020) 01024DOI: https://doi.org/10.1051/e3sconf/202020301024