AA.VV., . “Callosities Due to Repeated Friction / Unusual lesion. / Folliculitis of the Buttock / A.P.E.C. / Acute Self-Healing Pustulosis.”. European Journal of Pediatric Dermatology, vol. 9, no. 2, June 1999, pp. 93-8, https://ejpd.com/index.php/journal/article/view/99.