Bartosik, M., D. Bartosik-Zielińska, M. Blicharz, A. Blicharz, and T. Swatko. “Primary Amenorrhea - Where Is the Issue? A Systematic Review of Literature in Search of an Answer”. Journal of Education, Health and Sport, vol. 15, no. 1, Mar. 2023, pp. 56-62, doi:10.12775/JEHS.2023.15.01.007.