Evaluation of lozenges containing egg yolk antibody against Porphyromonas gingivalis gingipains as an adjunct to conventional non‐surgical therapy in periodontitis patients: A rand... von Nguyen, Sa V., Nguyen, Minh T.H., Tran, Binh C., Ho, Minh T.Q., Umeda, Kouji, Rahman, Shofiqur

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