Kaźmierska, B., Kowalczyk, B., Leśków, A., Tarnowska, M., Galas, N., Łuczak, P., Sobiech, K., Dudek, K., Jackowska, E. and Całkosiński, I. 2017. The evaluate the thoracic kyphosis at children in age 8-12 years. Journal of Education, Health and Sport. 7, 1 (Jan. 2017), 28–45.