The use of digital models of hemodynamics for the development of the 21st century skills as a components of healthcare competence of the physical education teacherOksana Klochko, Vasyl Fedorets, Olena Maliar and Vitaliy HnatuykE3S Web Conf., 166 (2020) 10033DOI: https://doi.org/10.1051/e3sconf/202016610033