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Simonetti, G.; Trevisan, E.; Gaviani, P.; Lamperti, E.; Salmaggi, A.; Silvani, A. . (2013). Safety of bevacizumab with or without anticoagulant treatment in neuro-oncological patients: A systematic review. Journal of the Neurological Sciences, 333(), e602–. doi:10.1016/j.jns.2013.07.2101 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research