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Wibowo, Erik; Wong, Samantha T. S.; Wassersug, Richard J.; Johnson, Thomas W. . (2019). Characteristics of Males Who Obtained a Voluntary Penectomy. Archives of Sexual Behavior, (), –. doi:10.1007/s10508-019-01607-8 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research