Cusick, Elizabeth H., Ashfaq A. Marghoob, and Ralph P. Braun. 2017. “Laugier-Hunziker Syndrome: A Case of Asymptomatic Mucosal and Acral Hyperpigmentation”. Dermatology Practical & Conceptual 7 (2). https://doi.org/10.5826/dpc.0702a05.