Muhammad Nayyab Tahir, Husnain Athar, Maheen Shahid, Raneesha Umer, Abrar Ul H Aq. Frequency of Vitamin B12 Deficiency in patients of Pancytopenia. Pakistan Journal of Medical & Health Sciences [Internet]. 2023 Jan. 11 [cited 2024 Nov. 21];16(12):40. Available from: https://pjmhsonline.com/index.php/pjmhs/article/view/3493