Widowati, W. .; Widyanto, R. M. .; Laksmitawati, D. R. .; Husin, W. .; Ratnawati, H. .; Bachtiar, I. . Green Tea Extract Protects Endothelial Progenitor Cells from Oxidative Damage Through Reduction of Intracellular Reactive Oxygen Species Activity. icbb 2011, 1, B44-B55.