Response to letter regarding article, "The prognostic impact of uric acid in patients with severely decompensated acute heart failure". Issue 2 (August 2017) - Okazaki, Hirotake; Shirakabe, Akihiro; Otsuka, Toshiaki; Kobayashi, Nobuaki; Hata, Noritake; Shinada, Takuro; Matsushita, Masato; Yamamoto, Yoshiya; Shibuya, Junsuke; Shiomura, Reiko; Nishigoori, Suguru; Asai, Kuniya; et al.