KUPCZYK, Katarzyna et al. Klinefelter Syndrome – Etiology, Clinical Presentation and Modern Approaches to the Diagnosis and Treatment: A Literature Review. Journal of Education, Health and Sport, [S. l.], v. 90, 2026. DOI: 10.12775/JEHS.2026.90.70248. Disponível em: https://apcz.umk.pl/JEHS/article/view/70248. Acesso em: 11 apr. 2026.