Serial changes of plasma plasminogen activator inhibitor activity in acute myocardial infarction: difference between thrombolytic therapy and direct coronary angioplasty - Hirashima, O; Ogawa, H; Oshima, S; Sakamoto, T; Honda, Y; Sakata, S; Masuda, T; Miyao, Y; Yasue, H (Am Heart J, 1995)