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Pinto, Nelson; Harnish, Alexandra; Cabrera, Carolina; Andrade, Catherine; Druttman, Tony; Brizuela, Claudia . (2017). An Innovative Regenerative Endodontic Procedure Using Leukocyte and Platelet-rich Fibrin Associated with Apical Surgery: A Case Report. Journal of Endodontics, (), S0099239917308543–. doi:10.1016/j.joen.2017.07.002 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research