Cost-effectiveness of implantable cardioverter-defibrillators for primary prevention in heart failure with reduced ejection fraction: a Markov model using JROAD-DPC cost data in Japan. - Ohashi K; Watanabe M; Morii Y; Yokoshiki H; Kusano K; Imai K; Takagi M; Yamane T; Tada H; Ogasawara K (Frontiers in cardiovascular medicine, 2026)