title: Reversible luteal phase changes and infertility associated with marathon training.
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007247:Infertility, Female / Q000209:etiology*; D008183:Luteal Phase; D008297:Male; D008598:Menstruation; D011247:Pregnancy; D012420:Running; D013178:Sports Medicine