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Low serum vitamin D levels are associated with neonatal indirect hyperbilirubinemia and prolonged phototherapy duration: a retrospective case–control study

Crossref DOI link: https://doi.org/10.1186/s12887-026-07234-2

Published Online: 2026-06-30

Update policy: https://doi.org/10.1007/springer_crossmark_policy

Authors

Demir, Batuhan Berk https://orcid.org/0000-0002-0349-5112
Hazer, İlhan

Turkeli, Ahmet
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Text and Data Mining valid from 2026-06-30

Version of Record valid from 2026-09-23
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Article History

Received: 1 May 2026

Accepted: 22 June 2026

First Online: 30 June 2026

Declarations

Ethics approval and consent to participate: This retrospective case–control study was approved by the Kütahya Health Sciences University Non-Interventional Clinical Research Ethics Committee (Decision No: 2024/11–35; Date: 30 September 2024). The study was conducted in accordance with the ethical principles of the Declaration of Helsinki. As the study was retrospective and based on archived hospital records, informed consent was waived by the ethics committee.

Competing interests: The authors declare no competing interests.

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