Echocardiography in infants and children. American Academy of Pediatrics. Section on Cardiology.
D002309:Cardiology / Q000592:standards; D002648:Child; D002675:Child, Preschool; D004452:Echocardiography / Q000191:economics / Q000592:standards* / Q000706:statistics & numerical data; D006801:Humans; D007223:Infant; D010372:Pediatrics / Q000592:standards