Zeller I, Wiedemann D, Schwaiger S, Stelzmuller M, Kreutmayer S, Leberfing O, Stuppner H, Bernhard D. Inhibition of cell surface expression of endothelial adhesion molecules by ursolic acid prevents intimal hyperplasia of venous bypass grafts in rats. European Journal of Cardio-Thoracic Surgery. 2012 May 02;42(5):878–84. doi: 10.1093/ejcts/ezs128.