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Mager, Lukas F.; Burkhard, Regula; Pett, Nicola; Cooke, Noah C. A.; Brown, Kirsty; Ramay, Hena; Paik, Seungil; Stagg, John; Groves, Ryan A.; Gallo, Marco; Lewis, Ian A.; Geuking, Markus B.; McCoy, Kathy D. . (2020). Microbiome-derived inosine modulates response to checkpoint inhibitor immunotherapy. Science, (), eabc3421–. doi:10.1126/science.abc3421 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research