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Tooba Fateen, Zertaj Kashif, Sehar Shamshad Ali, Fauzia Aamer, Kanwar Sajid Ali, Muhammad Bilal Pasha, Sonia Zafar Warriach. Vitamin B 12 deficiency….The Predominant Cause of Macrocytic Anemia in Pediatric Population Visiting Children Hospital Lahore. Pakistan Journal of Medical & Health Sciences 2022, 16, 242.