Microbiological and Clinical Effects of a Proanthocyanidin-enriched Extract from Rumex acetosa in Periodontally Healthy Carriers of Porphyromonas gingivalis: a Randomized Controlled Pilot Study - Selbach, Sabine; Klocke, Astrid; Peters, Ulrike; Beckert, Sabine; Watt, Rory Munro; Tong, Raymond; Flemmig, Thomas Frank; Hensel, Andreas; Beikler, Thomas (Planta medica, 2023)