C. E. Bistriceanu, F. A. Danciu, and L. Crăcană, “False increased vitamin B12 levels in autoimmune gastritis and subacute combined degeneration of the spinal cord”, Arch Clin Cases, vol. 2, no. 1, pp. Arch Clin Cases 2015; 2(1):7–11, Mar. 2015, doi: 10.22551/2015.05.0201.10026.