Bistriceanu, Cătălina Elena, et al. “False Increased Vitamin B12 Levels in Autoimmune Gastritis and Subacute Combined Degeneration of the Spinal Cord”. Archive of Clinical Cases, vol. 2, no. 1, Mar. 2015, pp. Arch Clin Cases 2015; 2(1):7-11, https://doi.org/10.22551/2015.05.0201.10026.