[1] Methodist DeBakey Heart & Vasc Ctr, Houston, TX USA
[2] Univ Alabama, Birmingham, AL USA
[3] Cleveland Clin, Cleveland, OH 44106 USA
[4] Univ Texas Houston, Sch Publ Hlth, Houston, TX USA
[5] Univ Calif Irvine, Orange, CA 92668 USA
[6] St Lukes Hosp, Mid Amer Heart Inst, Kansas City, MO 64111 USA
[7] Midwest Heart Specialists, Winfield, IL USA
[8] CV Therapeut Inc, Palo Alto, CA USA