Pieretti, B., B. Canovari, M. Moretti, C. Pieretti, and E. Pazzaglia. “Drug-Resistant Streptococcus Pyogenes: A Case Report of Pyoderma and Cellulitis”. Microbiologia Medica, Vol. 32, no. 3, Oct. 2017, doi:10.4081/mm.2017.6617.