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Kinane DF, Preshaw PM, Loos BG; Working Group 2 of Seventh European Workshop on Periodontology.Kinane DF, et al.J Clin Periodontol. 2011 Mar;38 Suppl 11:44-8. doi: 10.1111/j.1600-051X.2010.01682.x.J Clin Periodontol. 2011.PMID: 21323703