The evaluation of α-tocopherol concentration instead of α-tocopherol:cholesterol ratio in adult cystic fibrosis patients results in the overestimation of vitamin E deficiency (E. Sapiejka, P. Krzyżanowska-Jankowska, D. Walkowiak, S. Kurek, & J. Walkowiak , Trans.). (2019). Journal of Medical Science, 88(1), 21-25. https://doi.org/10.20883/jms.313