title: Letter to the editor: authors' response.
authors: Simone
authors: S
authors: Marconcini
mesh_terms: D010520:Aggressive Periodontitis / Q000235:genetics*; D055113:Chronic Periodontitis / Q000235:genetics*; D005260:Female; D006801:Humans; D008297:Male; D016133:Polymerase Chain Reaction / Q000379:methods*