Associations between probable REM sleep behavior disorder, olfactory disturbance, and clinical symptoms in Parkinson’s disease: A multicenter cross-sectional study

• Mutsumi Iijima ,

  Roles Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Writing – original draft

  * E-mail: iijima.mutsumi@twmu.ac.jp

  Affiliation Department of Neurology, Tokyo Women’s Medical University School of Medicine, Tokyo, Japan

  https://orcid.org/0000-0001-7384-0930

  ⨯
• Yasuyuki Okuma,

  Roles Conceptualization, Data curation, Investigation, Methodology, Writing – review & editing

  Affiliation Department of Neurology, Juntendo University Shizuoka Hospital, Shizuoka, Japan

  ⨯
• Keisuke Suzuki,

  Roles Conceptualization, Data curation, Investigation, Writing – review & editing

  Affiliation Department of Neurology, Dokkyo Medical University, Tochigi, Japan

  ⨯
• Fumihito Yoshii,

  Roles Conceptualization, Data curation, Investigation, Writing – review & editing

  Affiliation Department of Neurology, Saiseikai Shonan Hiratsuka Hospital, Hiratsuka, Kanagawa, Japan

  ⨯
• Shigeru Nogawa,

  Roles Conceptualization, Data curation, Writing – review & editing

  Affiliation Department of Neurology, Tokai University Hachioji Hospital, Tokyo, Japan

  ⨯
• Takashi Osada,

  Roles Conceptualization, Data curation, Writing – review & editing

  Affiliations Department of Neurology and Cerebrovascular Medicine, Saitama Medical University, International Medical Center, Saitama, Japan, Department of Neurology, Keio University School of Medicine, Tokyo, Japan

  ⨯
• Koichi Hirata,

  Roles Conceptualization, Data curation, Writing – review & editing

  Affiliation Department of Neurology, Dokkyo Medical University, Tochigi, Japan

  ⨯
• Kazuo Kitagawa,

  Roles Conceptualization, Investigation, Writing – review & editing

  Affiliation Department of Neurology, Tokyo Women’s Medical University School of Medicine, Tokyo, Japan

  ⨯
• Nobutaka Hattori

  Roles Conceptualization, Project administration, Supervision, Writing – review & editing

  Affiliation Department of Neurology, Juntendo University School of Medicine, Tokyo, Japan

  ⨯