Independence at the top.
D000818:Animals; D003281:Contraceptives, Postcoital / Q000600:supply & distribution; D004345:Drug Industry / Q000331:legislation & jurisprudence; D049674:History, 21st Century; D006801:Humans; D007252:Influenza Vaccines / Q000600:supply & distribution; D007251:Influenza, Human / Q000453:epidemiology / Q000517:prevention & control / Q000662:veterinary; D007857:Leadership; D011057:Politics; D014481:United States; D014486:United States Food and Drug Administration / Q000458:organization & administration*
D003281:Contraceptives, Postcoital; D007252:Influenza Vaccines