1.
Henshaw EB, Okafor LE, Ekpenyong HJ. Cutaneous hyperpigmentation as a diagnostic marker of vitamin B12 deficiency: a case report. Int J Res Dermatol [Internet]. 2022 Apr. 26 [cited 2025 Oct. 13];8(3):353-7. Available from: https://www.ijord.com/index.php/ijord/article/view/1541