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Ma, Chao; Huang, Yuguang . (2016). [Advances in Experimental Medicine and Biology] Translational Research in Pain and Itch Volume 904 || Pain Modulation and the Transition from Acute to Chronic Pain. , 10.1007/978-94-017-7537-3(Chapter 8), 105–115. doi:10.1007/978-94-017-7537-3_8 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research