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Boyne, Devon J; O'Sullivan, Dylan E.; Olij, Branko F.; King, Will D.; Friedenreich, Christine M.; Brenner, Darren R. . (2018). Physical Activity, Global DNA Methylation and Breast Cancer Risk: A Systematic Literature Review and Meta-Analysis. Cancer Epidemiology Biomarkers & Prevention, (), cebp.0175.2018–. doi:10.1158/1055-9965.EPI-18-0175 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research