Certification and licensing in the allied health professions.
D002568:Certification; D006281:Health Occupations; D049672:History, 19th Century; D006801:Humans; D008004:Licensure / Q000266:history / Q000592:standards; D008005:Licensure, Dental; D008007:Licensure, Medical; D008009:Licensure, Pharmacy; D014481:United States