[1] MedStar Washington Hosp Ctr, Dept Internal Med, 110 Irving St NW,1A-50, Washington, DC 20010 USA
[2] Univ Miami, Dept Cardiol, JFK Med Ctr, Atlantis, FL USA
[3] Creighton Univ, Cardiovasc Dept, Omaha, NE 68178 USA
[4] Univ Kansas, Wesley Med Ctr, Heartland Cardiol, Intervent Cardiol, Wichita, KS USA
[5] Wayne State Univ, Detroit Med Ctr, Dept Intervent Cardiol, Detroit Heart Hosp, Detroit, MI USA