Salvatore, E., M. Caproni, M. Battini, and P. Fabbri. “Benign Cephalic Histiocytosis.”. European Journal of Pediatric Dermatology, vol. 6, no. 3, Jan. 2018, pp. 147-52, https://www.ejpd.com/index.php/journal/article/view/1560.