Maternal serum progesterone and BMI are associated with neonatal sex ratios following single frozen embryo transfer

• Robert Czech,

  Roles Conceptualization, Data curation, Formal analysis, Investigation, Resources, Software, Writing – review & editing

  Affiliation Gameta Gdynia Center of Health, Gdynia, Poland

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• Dariusz Wójcik,

  Roles Data curation, Investigation, Supervision

  Affiliation Gameta Gdynia Center of Health, Gdynia, Poland

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• Tomasz Skweres,

  Roles Data curation, Investigation, Resources

  Affiliation Gameta Gdynia Center of Health, Gdynia, Poland

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• Wojciech Śliwiński,

  Roles Data curation, Investigation

  Affiliation Gameta Gdynia Center of Health, Gdynia, Poland

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• Dorota Zamkowska,

  Roles Data curation, Investigation

  Affiliation Gameta Gdynia Center of Health, Gdynia, Poland

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• Przemysław Ciepiela

  Roles Conceptualization, Formal analysis, Investigation, Methodology, Project administration, Validation, Writing – original draft, Writing – review & editing

  * E-mail: przemyslaw.ciepiela@gmail.com

  Affiliation Bocian Fertility Clinic, Gynecology and Obstetrics, Szczecin, Poland

  https://orcid.org/0000-0001-9705-0490

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