N.E., Manturova, Ikonnikova E.V., and A.G. Stenko. “The Role of Genetic Polymorphism in the Occurrence of Hyperpigmentation”. Kremlin Medicine Journal, no. 1 (April 11, 2018): 35-39. Accessed July 22, 2024. https://kremlin-medicine.ru/index.php/km/article/view/1028.