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Derogar, M.; Lagergren, P. . (2012). Health-Related Quality of Life Among 5-Year Survivors of Esophageal Cancer Surgery: A Prospective Population-Based Study. Journal of Clinical Oncology, 30(4), 413–418. doi:10.1200/jco.2011.38.9791 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research