Maniscalco, M., G. Noto, L. Zichichi, R. Rinaldi, A. Milano, and A. Patrizi. 2004. “Mongolian Spot. Incidence and Natural History in Western Sicily.”. European Journal of Pediatric Dermatology 14 (3):137-40. https://ejpd.com/index.php/journal/article/view/274.