W. Hayat, M. S. Faisal, A. Inayat, and K. U. R. Khalil, “VITAMIN B12 DEFICIENCY IN TYPE II DIABETIC PATIENTS ON METFORMIN THERAPY;A STUDY CONDUCTED IN TERTIARY CARE HOSPITAL OF PESHAWAR”, JMS, vol. 26, no. 2, pp. 151–154, Jun. 2018.