[1] Univ Arkansas Med Sci, Dept Internal Med, Little Rock, AR 72205 USA
[2] Univ Arkansas Med Sci, Dept Physiol, Little Rock, AR 72205 USA
[3] Univ Arkansas Med Sci, Dept Biophys, Little Rock, AR 72205 USA
[4] Cent Arkansas Vet Hlth Care Syst, Little Rock, AR USA
[5] Univ Roma Tor Vergata, Dept Cardiol, Rome, Italy
[6] Uppsala Univ, Dept Forens Med, Uppsala, Sweden
[7] Osaka Univ, Natl Cardiovasc Ctr, Res Inst, Dept Biosci, Osaka, Japan