Ijaz, Saman, Shahzad Rauf, Usama Bin Zubair, Fariha Iqbal, Waleed Iqbal, and Zeeshan Nasir. 2025. “Vitamin B 12 Deficiency  Among Depressive Patients Presenting  in Tertiary Care  Hospital of Karachi”. Pakistan Armed Forces Medical Journal 75 (1): 99-102. https://doi.org/10.51253/pafmj.v75i1.11041.