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Leal, Alessandro; Sidransky, David; Brait, Mariana . (2019). Tissue and Cell-Free DNA-Based Epigenomic Approaches for Cancer Detection. Clinical Chemistry, (), clinchem.2019.303594–. doi:10.1373/clinchem.2019.303594 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research