Physician assistants in the emergency department.
D002983:Clinical Competence / Q000592:standards; D003406:Credentialing / Q000592:standards*; D004501:Education, Medical / Q000592:standards; D004635:Emergency Medicine / Q000193:education* / Q000592:standards; D006801:Humans; D008504:Medical Staff Privileges / Q000592:standards; D010823:Physician Assistants / Q000193:education* / Q000592:standards; D012955:Societies, Medical; D013219:State Government; D014481:United States