Who needs drug insurance?
D000368:Aged; D002675:Child, Preschool; D004345:Drug Industry; D004363:Drug Utilization; D005252:Fees, Pharmaceutical; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007356:Insurance, Pharmaceutical Services / Q000639:trends; D010344:Patient Advocacy; D010605:Pharmacy Administration; D014481:United States