AUTHOR=Wang Keyan , Dong Fangli , Ma Shuxia , Bu Zhiqin 

TITLE=The association between Vitamin D deficiency and clinical pregnancy rate in IVF patients with different age

JOURNAL=Frontiers in Endocrinology

VOLUME=15

YEAR=2025

URL=https://www.frontiersin.org/journals/endocrinology/articles/10.3389/fendo.2024.1485238

DOI=10.3389/fendo.2024.1485238

ISSN=1664-2392