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David R. Coghill, Tobias Banaschewski…. (2014). Efficacy of lisdexamfetamine dimesylate throughout the day in children and adolescents with attention-deficit/hyperactivity disorder: results from a randomized, controlled trial. , 23(2), 61–68. doi:10.1007/s00787-013-0421-y 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research