Henshaw, E.B., Okafor, L.E. and Ekpenyong, H.J. 2022. Cutaneous hyperpigmentation as a diagnostic marker of vitamin B12 deficiency: a case report. International Journal of Research in Dermatology. 8, 3 (Apr. 2022), 353–357. DOI:https://doi.org/10.18203/issn.2455-4529.IntJResDermatol20221015.