Garofalo, L., et al. “Acanthosis Nigricans Vulgaris. A Marker of Hyperinsulinemia”. European Journal of Pediatric Dermatology, vol. 13, no. 2, June 2003, pp. 85-8, https://ejpd.migration.pkpps03.publicknowledgeproject.org/index.php/journal/article/view/245.