Are we ready for building transition programs for heart transplant recipients in Japan? – Knowing the unique background is the first step for discussion - Kato, Tomoko S.; Gomi, Harumi; Aizawa, Yoshiyasu; Kawamura, Akio; Eisen, Howard J.; Hunt, Sharon A.; Inoue, Takamitsu (Frontiers in Pediatrics, 2022)