Correction: Effect of walkability on the physical activity of hemodialysis patients: a multicenter study

oleh: Yoichi Sato, Naoto Usui, Yoshifumi Abe, Daisuke Okamura, Yota Kuramochi, Sho Kojima, Nobuto Shinozaki, Yu Shimano, Nobuyuki Shirai, Kenta Mikami, Yoji Yamada, Masakazu Saitoh