KUPCZYK, Katarzyna, KAZACHOK, Mikhail, PARUSZEWSKI, Szymon, DYBCIO, Aleksandra, JOŃCA, Mikołaj, KURYS, Natasza, SZYDŁOWSKA, Dorota, KUBISA, Adam, MILUSKI, Mateusz and KUPCZAK, Julia. Klinefelter Syndrome – Etiology, Clinical Presentation and Modern Approaches to the Diagnosis and Treatment: A Literature Review. Journal of Education, Health and Sport. Online. 10 April 2026. Vol. 90. [Accessed 11 April 2026]. DOI 10.12775/JEHS.2026.90.70248.