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Kushagra Verma; Thomas J Errico; Kenneth M Vaz; Baron S Lonner. (2010). A prospective, randomized, double-blinded single-site control study comparing blood loss prevention of tranexamic acid (TXA) to epsilon aminocaproic acid (EACA) for corrective spinal surgery. , 10(1), 13–0. doi:10.1186/1471-2482-10-13 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research