Fernández-Crehuet, P. and Ruiz-Villaverde, R. (2016) “Dirt-Like Hyperpigmented Plaques on the Neck and Linea Alba of a 12-Year-Old Girl”, Sultan Qaboos University Medical Journal, 16(2), pp. 259–260. doi: 10.18295/squmj.2016.16.02.023.