ALI, Sajid; HUSSAIN, Tariq; ALI , Sajid; ABDULLAH; KHAN, Muhammad Irshad. Frequency of Vitamin B12 Deficiency in H Pylori Positive Patients. Indus Journal of Bioscience Research, [S. l.], v. 3, n. 7, p. 506–510, 2025. DOI: 10.70749/ijbr.v3i7.1963. Disponível em: https://ijbr.com.pk/IJBR/article/view/1963. Acesso em: 31 may. 2026.