Dynamic Changes in Fourth Heart Sound in Type 2 Diabetes: Insights From Visualized Phonocardiography and SGLT2 Inhibitor Adjustment. - Yagi, Kunimasa; Chujo, Daisuke; Ogawa, Shimpei; Saito, Shumpei; Iwazawa, Makoto; Tsuchiya, Taketsugu; Mizuta, Shuichi; Yamasaki, Naohito; Muro, Takashi; Jha, Poulami (Case Reports in Medicine, 2025)