Husna, L.F. et al. 2026. Correlation between serum ferritin levels and follicle-stimulating hormone (FSH) in patients with beta-thalassemia major at Universitas Airlangga Hospital . Qanun Medika - Medical Journal Faculty of Medicine Muhammadiyah Surabaya. 10, 02 (Jul. 2026). DOI:https://doi.org/10.30651/jqm.v10i02.30605.