[1] Univ Oslo, Natl Hosp, Dept Cardiol, N-0027 Oslo 1, Norway
[2] Univ Oslo, Natl Hosp, Internal Med Res Inst, N-0027 Oslo, Norway
[3] Univ Texas, SW Med Ctr, Donald W Reynolds Cardiovasc Clin Res Unit, Dallas, TX USA
[4] Brigham & Womens Hosp, Div Cardiovasc, TIMI Study Grp, Boston, MA 02115 USA