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Every article on Frontiers is peer reviewed, permanently archived and free to read.

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Original Research
Published 12 October 2026
Nonlinear relationship between serum LH levels on hCG trigger day and live birth rates in patients with fresh embryo transfer: a retrospective cohort study
Yue Zhang · Yuxuan Xiao · Aimin Yang · Yang Yang · Lei Jiang · Jiahua Zheng · Kaixuan Guo · Wei Wang
Frontiers in Endocrinology
doi 10.3389/fendo.2026.1957191