Head cooling during sleep improves sleep quality in the luteal phase in female university students: A randomized crossover-controlled pilot study

• Seiji Hamanishi ,

  Roles Conceptualization, Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Project administration, Writing – original draft

  * E-mail: hamanishi@kusw.ac.jp

  Affiliations Graduate School of Medicine Density and Pharmaceutical Sciences, Okayama University, Okayama, Japan, Department of Nursing, Kansai University of Social Welfare, Ako, Japan

  http://orcid.org/0000-0001-5785-0426

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• Eri Eguchi ,

  Contributed equally to this work with: Eri Eguchi, Keiki Ogino

  Roles Project administration, Supervision, Writing – review & editing

  Affiliation Graduate School of Medicine Density and Pharmaceutical Sciences, Okayama University, Okayama, Japan

  ⨯
• Tatsuo Ito ,

  Roles Supervision, Writing – review & editing

  ¶‡ These authors also contributed equally to this work.

  Affiliation Graduate School of Medicine Density and Pharmaceutical Sciences, Okayama University, Okayama, Japan

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• Kenjiro Nagaoka ,

  Roles Supervision, Writing – review & editing

  ¶‡ These authors also contributed equally to this work.

  Affiliation Graduate School of Medicine Density and Pharmaceutical Sciences, Okayama University, Okayama, Japan

  ⨯
• Keiki Ogino

  Contributed equally to this work with: Eri Eguchi, Keiki Ogino

  Roles Project administration, Supervision, Writing – review & editing

  Affiliation Graduate School of Medicine Density and Pharmaceutical Sciences, Okayama University, Okayama, Japan

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