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Yuji Kuroyanagi; Takeo Nagura; Yoshimori Kiriyama; Hideo Matsumoto; Toshiro Otani; Yoshiaki Toyama; Yasunori Suda. (2012). A quantitative assessment of varus thrust in patients with medial knee osteoarthritis. , 19(2), 130–134. doi:10.1016/j.knee.2010.12.007 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research