CHILIMONIUK, Zuzanna, BORKOWSKA, Aleksandra, CHAŁUPNIK, Aleksandra, RAKSA, Karolina, SOBSTYL, Anna and PIECEWICZ-SZCZĘSNA, Halina. The problem of obesity and overweight among children and youth in the world. Journal of Education, Health and Sport. Online. 15 September 2018. Vol. 8, no. 9, pp. 1541-1547. [Accessed 17 August 2024].