article 12 inhibin B 12 female 10 follitropin 10 inhibin A 10 controlled study 8 human 8 priority journal 8 adult 6 enzyme linked immunosorbent assay 6 inhibin 6 major clinical study 6 DNA polymorphism 4 Inhibin levels 4 Inhibin α-subunit gene 4 Inhibins 4 Premature ovarian failure 4 allele 4 alpha chain 4 amenorrhea 4 confidence interval 4 cytosine 4 estradiol 4 follicular phase 4 genotype 4 gonadotropin 4 heterozygosity 4 hormonal regulation 4 negative feedback 4 nonhuman 4