Al-Amoush, A., Shaqra, Q. A., & Al-Groom, R. (2016). Evaluation of Vitamin B12 Serum Level in a Group of Jordanian Patients with Type 2 Diabetes Mellitus. Pakistan Journal of Nutrition, 15(6), 561–564. https://doi.org/10.3923/pjn.2016.561.564