?url_ver=Z39.88-2004&rft_id=MTMT%3A1906814+10.1093%2Feurheartj%2F14.8.1011&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=+El-Said+E.+S.+M.&rft.aulast=El-Said&rft.aufirst=E.+S.+M.&rft.date=1993&rft.issue=8&rft.volume=14&rft.atitle=Dobutamine+stress%E2%80%93Doppler+echocardiography+before+and+after+coronary+angioplasty&rft.issn=0195-668X%3B+1522-9645&rft.title=EUROPEAN+HEART+JOURNAL&rft.pages=1011-1021&rft.genre=article