The effect of ecological factors on a cardiovascular system of childrenSultan Tuleukhanov, Zhanna Abdrassulova, Nurdana Salybekova, Gulzhaina Alpamyssova and Arina KenshilikE3S Web Conf., 159 (2020) 01001DOI: https://doi.org/10.1051/e3sconf/202015901001
