1 Department of Cardiovascular Medicine, Adult Congenital Heart Disease Center, Okayama University Hospital, Okayama, Japan. Electronic address: Norihisa.Toh@okayama-u.ac.jp.
2 Department of Cardiovascular Medicine, Adult Congenital Heart Disease Center, Okayama University Hospital, Okayama, Japan.
3 Department of Cardiovascular Medicine, Okayama University Hospital, Okayama, Japan.
4 Department of Cardiovascular Surgery, Adult Congenital Heart Disease Center, Okayama University Hospital, Okayama, Japan.