Credentialing of the cardiac sonographer: the need for unification.
Adams
D
D
Duke University Medical Center, Durham, NC 27710.
Kisslo
K B
KB
Kisslo
J
J
D000574:American Medical Association; D003406:Credentialing; D004452:Echocardiography / Q000592:standards; D004493:Education; D006801:Humans; D012952:Societies; D014481:United States