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Gonzalez-Represas, Alicia; Mourot, Laurent . (2019). Stroke volume and cardiac output measurement in cardiac patients during a rehabilitation program: comparison between tonometry, impedancemetry and echocardiography. The International Journal of Cardiovascular Imaging, (), –. doi:10.1007/s10554-019-01738-y 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research