Pregnancy bias toward boys or girls: The Japan Environment and Children’s Study

• Shuhei So ,

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

  * E-mail: so@hama-med.ac.jp

  Affiliations Department of Reproductive and Perinatal Medicine, Hamamatsu University School of Medicine, Shizuoka, Japan, Tawara IVF Clinic, Shizuoka, Japan

  https://orcid.org/0000-0002-9464-6085

  ⨯
• Fumiko Tawara,

  Roles Supervision, Writing – review & editing

  Affiliation Tawara IVF Clinic, Shizuoka, Japan

  ⨯
• Yu Taniguchi,

  Roles Validation, Writing – review & editing

  Affiliation Japan Environment and Children’s Study Programme Office, National Institute for Environmental Studies, Tsukuba, Japan

  ⨯
• Naohiro Kanayama,

  Roles Supervision, Writing – review & editing

  Affiliation Department of Obstetrics and Gynecology, Hamamatsu University School of Medicine, Shizuoka, Japan

  ⨯
• the Japan Environment and Children’s Study (JECS) Group

  ¶¶ Membership of the Japan Environment and Children’s Study Group is listed in the Acknowledgments.

  ⨯