[1] Indiana Univ, Dept Med, Div Cardiovasc Med, Indianapolis, IN USA
[2] Indiana Univ, Div Cardiovasc Med, Clin Res Off, Indianapolis, IN USA
[3] Univ Northern Colorado, Sch Nursing, Greeley, CO USA
[4] Univ Texas Austin, Sch Nursing, Austin, TX USA
[5] Univ Illinois, Dept Populat Hlth, Chicago, IL USA
[6] Washington Univ St Louis, Dept Med, Div Cardiovasc Med, St Louis, MO USA
[7] Univ Wisconsin, Dept Med, Madison, WI USA
[8] Indiana Univ, Div Cardiovasc Med, 1800 North Capitol Ave, Indianapolis, IN 46202 USA