Szadowska-Szlachetka, Zdzisława, Andrzej Stanisławek, Marianna Charzyńska-Gul, Hanna Kachaniuk, and Katarzyna Muzyczka. 2009. “Standards Applied by the School Nurse Versus the Knowledge and Attitudes of Secondary School Students Concerning Normal Body Weight”. Polish Journal of Public Health 119 (4): 414-16. https://czasopisma.umlub.pl/pjph/article/view/2427.