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A.G. Tzakis. (2001). Cytomegalovirus prophylaxis with ganciclovir and cytomegalovirus immune globulin in liver and intestinal transplantation. , 3(Supplement s2), 35–39. doi:10.1034/j.1399-3062.2001.00007.x 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research