One electrogram‐tracing tells all: What is the mechanism of this supraventricular tachycardia?. (26th February 2021) - Hirata, Moyuru; Wakamatsu, Yuji; Nagashima, Koichi; Kurokawa, Sayaka; Otsuka, Naoto; Yagyu, Seina; Hirata, Shu; Nakai, Toshiko; Okumura, Yasuo