1. Division of Cardiology, Department of Internal Medicine; St. Marianna University School of Medicine; 2-16-1 Sugao Miyamae-district Kawasaki-city Kanagawa-prefecture 216-8511 Japan
2. St. Marianna University Yokohama-city Seibu Hospital; 1197-1 Yasashi-cho, Asahi-district Yokohama-city Kanagawa-prefecture 241-0811 Japan