title: Testing your diagnostic skills. Case no. 1: erythema migrans. Case no. 2: fibroma.
authors.forename: Ron
authors.initials: R
authors.lastname: Baughman
mesh_terms: D003937:Diagnosis, Differential; D004890:Erythema / Q000175:diagnosis*; D005260:Female; D005350:Fibroma / Q000175:diagnosis*; D005887:Gingival Neoplasms / Q000175:diagnosis*; D006801:Humans; D008875:Middle Aged; D014060:Tongue Diseases / Q000175:diagnosis*