Reticulocyte hemoglobin equivalent is an easily applicable marker for detecting iron deficiency in patients with acute decompensated heart failure - Keisuke Okuno; Yoshiro Naito; Junichi Ohno; Isamu Sunayama; Yuki Matsumoto; Yuko Soyama; Makiko Oboshi; Eri Manabe; Kohei Azuma; Masataka Sugahara; Kyung-Duk Min; Masanori Asakura; et al. (American Heart Journal Plus, 2023)