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Nallamshetty, Shriram; Chan, Stephen Y.; Loscalzo, Joseph . (2013). Hypoxia: A master regulator of microRNA biogenesis and activity. Free Radical Biology and Medicine, 64(), 20–30. doi:10.1016/j.freeradbiomed.2013.05.022 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research