title: Perianal infection with beta haemolytic streptococcus.
authors.forename: P M
authors.initials: PM
authors.lastname: Winterton
mesh_terms: D001004:Anus Diseases / Q000209:etiology*; D002648:Child; D002650:Child Abuse, Sexual; D006801:Humans; D009894:Opportunistic Infections / Q000209:etiology*; D013290:Streptococcal Infections / Q000209:etiology*