1.
Marzec J, Łukasz K, Musioł A, Gwałt P, Nowakowski M, Rakuś M. Role of vitamin D supplementation in the prevention of URTI (upper respiratory tract infections) among highly physically active individuals. J Educ Health Sport [Internet]. 2026 Apr. 7 [cited 2026 Apr. 10];89:70263. Available from: https://apcz.umk.pl/JEHS/article/view/70263