The number of small antral follicles (2-6 mm) is significantly related to age and also, independent of age, to all endocrine ORTs tested, suggesting the number of small antral follicles represents the functional ovarian reserve.
The authors have no conflicts of interest to declare. The study was supported by the University Medical Center Groningen, the Cornelia Foundation and the school for Behavioral- and Cognitive Neurosciences. The sponsors of the study had no role in study design, data collection, data analysis, data interpretation or writing of the report.
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