The increasing concern with infertility. Why now?
D000293:Adolescent; D000328:Adult; D001741:Black or African American; D000367:Age Factors; D001294:Attitude to Health; D005193:Family Planning Services; D005260:Female; D006296:Health Services / Q000706:statistics & numerical data*; D006297:Health Services Accessibility / Q000639:trends; D006801:Humans; D007247:Infertility, Female / Q000209:etiology / Q000523:psychology* / Q000628:therapy; D007248:Infertility, Male / Q000523:psychology; D008297:Male; D012725:Sexual Behavior; D014481:United States; D044465:White People