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Faggion, Clovis Mariano; Aranda, Luisiana; Pandis, Nikolaos; Alarcón, Marco Antonio; Diaz, Karla Tatiana (2019). Risk of bias over time in updates of Cochrane oral health reviews. Journal of dentistry, 80, pp. 63-68. Elsevier Science 10.1016/j.jdent.2018.10.004