Coronary artery bypass grafting (CABG) after initially successful percutaneous transluminal angioplasty (PTCA): a review of 17 years' experience. - Barakate,M.S.; Hemli,J.M.; Hughes,C.F.; Bannon,P.G.; Horton,M.D. (Eur J Cardiothorac Surg, 2003)