1 Department of Cardiovascular Medicine, Sapporo Cardiovascular Clinic, North 49, East 16, 8-1 Higashi Ward, Sapporo, Hokkaido, 007-0849, Japan. [email protected].
2 Department of Cardiovascular Medicine, Sapporo Cardiovascular Clinic, North 49, East 16, 8-1 Higashi Ward, Sapporo, Hokkaido, 007-0849, Japan.