[1] Univ Minnesota, Minneapolis, MN USA
[2] Univ N Carolina, Dept Epidemiol, Chapel Hill, NC USA
[3] Baylor Coll Med, Sect Atherosclerosis & Vasc Med, Houston, TX 77030 USA
[4] Baylor Coll Med, Atherosclerosis Clin Lab, Houston, TX 77030 USA
[5] Wake Forest Univ, Bowman Gray Sch Med, Winston Salem, NC USA