title: Letters to the editor: re: "real-time quantitative polymerase chain reaction analysis of patients with refractory chronic periodontitis".
authors: Sema S
authors: SS
authors: Hakki
authors: Tamer
authors: T
authors: Ataoğlu
authors: Erdogan E
authors: EE
authors: Hakki
authors: Seyit Ali
authors: SA
authors: Kayis
mesh_terms: D010520:Aggressive Periodontitis / Q000235:genetics*; D055113:Chronic Periodontitis / Q000235:genetics*; D005260:Female; D006801:Humans; D008297:Male; D016133:Polymerase Chain Reaction / Q000379:methods*