Skonieczna J, Olejniczak D, Kielan A. Comparison of the assessment of the level of sexual education in secondary schools by adolescents and parents. J Educ Health Sport [Internet]. 2017 Jun. 8 [cited 2024 Dec. 26];7(6):155-72. Available from: https://apcz.umk.pl/JEHS/article/view/4515