EZZOUBI NADA; AZZAOUI SIHAM; ECHCHARII NADIA; DINI NOUZHA. Vitamin B12 Deficiency Revealed by Severe Pancytopenia: A Case Study. International Journal of Scientific Research and Innovative Studies, [S. l.], v. 4, n. 5, p. 53–56, 2025. DOI: 10.63883/ijsrisjournal.v4i5.479. Disponível em: https://www.ijsrisjournal.com/index.php/ojsfiles/article/view/479. Acesso em: 19 oct. 2025.