Zieliński G, Ginszt M, Filipiak Z, Suwała M, Majcher P. Vitamin D deficiency and tension-type headaches in children - literature review. J Educ Health Sport [Internet]. 2019 Mar. 24 [cited 2024 Sep. 16];9(3):455-64. Available from: https://apcz.umk.pl/JEHS/article/view/6725