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Moro, Pedro L.; Haber, Penina; McNeil, Michael M. . (2019). Challenges in Evaluating Post-licensure Vaccine Safety: Observations from the Centers for Disease Control and Prevention. Expert Review of Vaccines, (), 14760584.2019.1676154–. doi:10.1080/14760584.2019.1676154 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research