Use of a cooling pack to reduce subcutaneous vaccine injection pain in children aged 3–6 years: A single-blind, randomized, parallel-group multicenter study

• Ikuo Okafuji ,

  Roles Conceptualization, Writing – original draft, Writing – review & editing

  * E-mail: okafuji@kcho.jp

  Affiliation Department of Pediatrics, Kobe City Medical Center General Hospital, Kobe, Hyogo, Japan

  https://orcid.org/0009-0006-9409-2082

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• Ryuta Washio,

  Roles Formal analysis, Investigation, Writing – review & editing

  Affiliation Washio Child Clinic, Kobe, Hyogo, Japan

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• Takao Okafuji,

  Roles Formal analysis, Investigation, Writing – review & editing

  Affiliation Okafuji Pediatric Clinic, Himeji, Hyogo, Japan

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• Yu Tanaka,

  Roles Data curation, Writing – review & editing

  Affiliations Department of Pediatrics, Kobe City Medical Center General Hospital, Kobe, Hyogo, Japan, Department of Pediatrics, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan

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• Tatsuo Kagimura

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

  Affiliation Translational Research Center for Medical Innovation, Foundation for Biomedical Research and Innovation at Kobe, Kobe, Hyogo, Japan

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