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Akhter, SP; Khan, S; Mehdi, T; Nasiruddin, Md; Mollah, FH . (2013). Renal Function Before and After Coronary Artery Bypass Grafting (CABG): Off Pump vs. On Pump. Bangladesh Journal of Medical Biochemistry, 3(2), –. doi:10.3329/bjmb.v3i2.13809 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research