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Eick, Sigrun; Mathey, Ayse; Vollroth, Karolin; Kramesberger, Martin; Bürgin, Walter; Sculean, Anton; Ramseier, Christoph; Jentsch, Holger (2017). Persistence of Porphyromonas gingivalis is a negative predictor in patients with moderate to severe periodontitis after nonsurgical periodontal therapy. Clinical oral investigations, 21(2), pp. 665-674. Springer-Verlag 10.1007/s00784-016-1933-x
