Shaikh, Zeeshan, Ali Nawaz Khan, Salman Amer Sheikh, Syed Onaiz Anwar, Saeed Khan Akhtar, and Rafia Alvi. 2024. “When B12 Therapy Fails: Two Case Reports of Intravenous Vitamin B12 Resistance in Pernicious Anemia”. KHYBER MEDICAL UNIVERSITY JOURNAL 16 (3):266-9. https://doi.org/10.35845/kmuj.2024.23417.