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M. Zachmann; A. Ferrandez; G. Mürset; H.E. Gnehm; A. Prader. (1976). Testosterone treatment of excessively tall boys. , 88(1), 116–123. doi:10.1016/s0022-3476(76)80742-1 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research