Zieliński, Grzegorz, Zuzanna Filipiak, Marta Suwała, Aleksandra Kozłowska, and Michał Ginszt. 2018. “The Impact of Nutritional Status on the Incidence of Back Pain in School-Aged Children - a Study Using the Cole’s Index”. Journal of Education, Health and Sport 8 (8):339-46. https://apcz.umk.pl/JEHS/article/view/5658.