Introducing heat-not-burn tobacco improves hematocrit and cigarette smoking-related symptoms in patients with smokers' polycythemia and polycythemia vera. - Iizuka, Kazuhide; Iizuka, Yoshikazu; Ito, Shun; Endo, Toshihide; Nukariya, Hironao; Takeuchi, Yuichi; Koike, Takashi; Kurihara, Kazuya; Takahashi, Hiromichi; Nakagawa, Masaru; Hamada, Takashi; Ohtake, Shimon; et al. (PLoS ONE, 2025)