A case of natalizumab‐associated progressive multifocal leukoencephalopathy followed by immune reconstitution inflammatory syndrome with difficulty in the timing of immunotherapy. - Sugimoto, Takamichi; Neshige, Shuichiro; Aoki, Shiro; Ochi, Kazuhide; Ishikawa, Ruoyi; Nonaka, Megumi; Nakamori, Masahiro; Nezu, Tomohisa; Nakamichi, Kazuo; Yamazaki, Yu; Maruyama, Hirofumi (Clinical & Experimental Neuroimmunology, 2023)