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Waldron, J. L.; Ashby, H. L.; Cornes, M. P.; Bechervaise, J.; Razavi, C.; Thomas, O. L.; Chugh, S.; Deshpande, S.; Ford, C.; Gama, R. . (2013). Vitamin D: a negative acute phase reactant. Journal of Clinical Pathology, 66(7), 620–622. doi:10.1136/jclinpath-2012-201301 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research