Research on the relationship between serum indoxyl sulfate concentration and iron dynamics index in patients with end-stage kidney disease: a cross-sectional study oleh Takuya Yoshida, Masayuki Tsujimoto, Sachiyo Kawakami, Haruno Fujioka, Yuko Irie, Saki Nakatani, Ayako Iso, Ayaka Sugiyama, Mizuho Miyake, Kazumi Hirato, Rie Tanaka, Tomoko Oda, Taku Furukubo, Satoshi Izumi, Tomoyuki Yamakawa, Tetsuya Minegaki, Kohshi Nishiguchi