A case of severe parkinsonism in an elderly person induced by valproic acid. Issue 1 (12th January 2016) - Tada, Haruka; Ogihara, Tomomi; Nakamura, Toshinori; Sasayama, Daimei; Sugiyama, Nobuhiro; Takahashi, Yuka; Washizuka, Shinsuke; Amano, Naoji