Effects of prolonged direct hemoperfusion using a polymyxin B immobilized fiber cartridge on interleukin-6 concentration in patients with septic shock: a prospective exploratory tr... oleh Kyohei Miyamoto, Yu Kawazoe, Shigeo Negi, Naoaki Shibata, Atsuhiro Ogawa, Nozomu Shima, Kosei Kunitatsu, Yukihiro Shima, Nobuko Yamamoto, Masahiro Kaneko, Maki Kida, Masaou Tanaka, Masaki Ohya, Takashi Shigematsu, Seiya Kato