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Ruffing, Thomas; Danko, Tim; Henzler, Thomas; Weiss, Christel; Hofmann, Alexander; Muhm, Markus . (2017). Number of positive radiographic findings in pediatric trauma patients. Emergency Radiology, 24(3), 281–286. doi:10.1007/s10140-017-1482-x 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research