Childlessness, intentional and unintentional.
D000300:Adoption; D000328:Adult; D000342:Affective Symptoms; D005193:Family Planning Services; D005260:Female; D006801:Humans; D007246:Infertility; D007315:Insemination, Artificial; D008297:Male; D008393:Marriage; D009042:Motivation; D010290:Parents; D011155:Population Control; D012924:Social Conditions; D014481:United States