A quantitative study of postoperative luminal narrowing of the internal thoracic artery graft in coronary artery bypass surgery. - Seki,T.; Kitamura,S.; Kawachi,K.; Morita,R.; Kawata,T.; Mizuguchi,K.; Hasegawa,J.; Kameda,Y.; Yoshida,Y. (J Thorac Cardiovasc Surg, 1992)