[1] Ohio State Univ, Internal Med, Columbus, OH 43210 USA
[2] Ohio State Univ, Cardiovasc Dis, Columbus, OH 43210 USA
[3] Yale Univ, Cardiovasc Dis, New Haven, CT USA
[4] Mayo Clin, Cardiovasc Dis, Rochester, MN USA
[5] Ohio State Univ, Hematol, Columbus, OH USA