Correlation analysis between gut microbiota alterations and the cytokine response in patients with coronavirus disease during hospitalization by Mizutani, T, Ishizaka, A, Koga, M, Ikeuchi, K, Saito, M, Adachi, E, Yamayoshi, S, Iwatsuki-Horimoto, K, Yasuhara, A, Kiyono, H, Matano, T, Suzuki, Y, Tsutsumi, T, Kawaoka, Y, Yotsuyanagi, H