1. Department of Respirology, Graduate School of Medicine, Chiba University
2. Department of Advanced Medicine in Pulmonary Hypertension, Graduate School of Medicine, Chiba University
3. Department of Advancing Research on Treatment Strategies for Respiratory, Graduate School of Medicine, Chiba University
4. Department of Cardiovascular Surgery, Graduate School of Medicine, Chiba University
5. Department of Cardiovascular Surgery, Eastern Chiba Medical Center
6. Department of Cardiovascular Surgery, National Hospital Organization, Chiba Medical Center