The deficient luteal phase may represent an anovulatory cycle.
D005260:Female; D006801:Humans; D007247:Infertility, Female / Q000209:etiology*; D010048:Ovarian Cysts / Q000150:complications* / Q000175:diagnosis; D011374:Progesterone / Q000097:blood; D014465:Ultrasonics
D011374:Progesterone