[1] Asa Hosp, Dept Cardiovasc Physiol & Med, Hiroshima, Japan
[2] Hiroshima Univ, Dept Cardiovasc Physiol & Med, Hiroshima, Japan
[3] Brigham & Womens Hosp, Dept Cardiovasc Physiol & Med, Hiroshima, MA USA
[4] Harvard Univ, Sch Med, Hiroshima, MA USA