Periodontitis and chronic kidney disease: a systematic review of the association of diseases and the effect of periodontal treatment on estimated glomerular filtration rate - Chambrone, Leandro; Foz, Adriana Moura; Guglielmetti, Mariana Rocha; Pannuti, Cláudio Mendes; Artese, Hilana Paula Carillo; Feres, M; Romito, Giuseppe Alexandre (Journal of Clinical Periodontology, 2013)