title: The epidemiology of infertility.
mesh_terms: D000022:Abortion, Spontaneous / Q000453:epidemiology*; D000328:Adult; D000349:Africa; D005260:Female; D006801:Humans; D007246:Infertility / Q000453:epidemiology*; D008297:Male; D011247:Pregnancy; D012959:Socioeconomic Factors