title: A note on the generalization of William Brass's model.
mesh_terms: D000293:Adolescent; D000328:Adult; D001722:Birth Order; D005260:Female; D005298:Fertility; D005306:Fertilization; D006801:Humans; D007246:Infertility; D008297:Male; D008393:Marriage; D008875:Middle Aged; D008954:Models, Biological; D010298:Parity; D049590:Postpartum Period; D011247:Pregnancy; D011336:Probability; D012098:Reproduction; D013997:Time Factors; D014481:United States