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Kim, So Young; Lee, Joon Kyu; Sim, Songyong; Choi, Hyo Geun; Blank, Robert Daniel . (2018). Hearing impairment increases the risk of distal radius, hip, and spine fractures: A longitudinal follow-up study using a national sample cohort. PLOS ONE, 13(2), e0192820–. doi:10.1371/journal.pone.0192820 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research