Romano, I., C. Venturi, and P. Bassissi. “Perianal Streptococcal Dermatitis and Guttate Psoriasis. Case Report.”. European Journal of Pediatric Dermatology, vol. 12, no. 2, June 2002, pp. 93-6, https://www.ejpd.com/index.php/journal/article/view/204.