A Case of Ventricular Premature Contractions With Multiple Morphologies Reproduced by a Single Ventricular Extrastimulus With Different Coupling Intervals. - Miwa, Naoyuki; Nakata, Tadanori; Hara, Satoshi; Tahara, Tomohiro; Ishizawa, Taiki; Hirano, Hidenori; Sato, Yoshikazu; Kusa, Shigeki; Hachiya, Hitoshi (Journal of Cardiovascular Electrophysiology, 2025)