The Analysis of Questionnaires About Safety of Drug Use, the Application of Text Mining to Free Description Questionnaires 論文 Masaomi Kimura・Hiroyuki Furukawa・Hitoshi Tsukamoto・Hisao Tasaki・Masahiro Kuga・Michiko Ohkura・Fumito Tsuchiya ·2005-01-01 ·『The Japanese Journal of Ergonomics』 41(5) pp. 297-305 doi:10.5100/jje.41.297