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Ezzoubi Nada, Azzaoui Siham, Echcharii Nadia, Dini Nouzha. Vitamin B12 Deficiency Revealed by Severe Pancytopenia: A Case Study. IJSRIS [Internet]. 2025 Oct. 1 [cited 2025 Oct. 19];4(5):53-6. Available from: https://www.ijsrisjournal.com/index.php/ojsfiles/article/view/479