Suwalski G, Suwalski P, Filipiak KJ, Postuła M, Majstrak F, Opolski G. The effect of off-pump coronary artery bypass grafting on platelet activation in patients on aspirin therapy until surgery day. Eur J Cardiothorac Surg. 2008 Aug;34(2):365–9; discussion 369. doi: 10.1016/j.ejcts.2008.05.010. PMID: 18550381.