R Nano, R Invernizzi, A Pecci, M Civallero and G Gerzeli (2000) “Dihydrofolate reductase activity in the erythroblasts of patients with 5q- syndrome”, Haematologica. Pavia, Italy, 85(7), pp. 765-766. Available at: https://haematologica.org/article/view/1740 (Accessed: 10September2026).