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Bahrambeigi, Saman; Sanajou, Davoud; Shafiei-Irannejad, Vahid . (2019). Major fundamental factors hindering immune system in defense against tumor cells: The link between insufficiency of innate immune responses, metabolism, and neurotransmitters with effector immune cells disability. Immunology Letters, 212(), 81–87. doi:10.1016/j.imlet.2019.06.008 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research