Arraztoa, J.A. (2015) “Preliminary experience in the use of fertility charting in a cohort of infertility patients at a Department of Obstetrics and Gynecology”, Medicina UPB, 34(1), pp. 9–15. Available at: https://revistas.upb.edu.co/index.php/medicina/article/view/1320 (Accessed: 25 July 2026).