Detection and quantification of periodontal pathogens in smokers and never-smokers with chronic periodontitis by real-time polymerase chain reaction - Guglielmetti, Mariana R.; Rosa, Ecinele F.; Lourenção, Daniele S.; Inoue , Gislene; Gomes, Elaine F.; De Micheli , Giorgio; Mendes, Fausto Medeiros; Hirata, Rosario Dominguez Crespo; Hirata, Mario Hiroyuki; Pannuti, Claudio Mendes (Journal of Periodontology, 2014)