Wróblewska I, Wróblewska Z, Manulik S. Quality of life of elderly people with gastrointestinal malignant tumors. J Educ Health Sport [Internet]. 2019 Mar. 7 [cited 2025 Jun. 28];9(3):85-96. Available from: https://apcz.umk.pl/JEHS/article/view/6654