The safety of diagnostic ultrasonography.
D002648:Child; D002675:Child, Preschool; D005260:Female; D005333:Fetus / Q000473:pathology; D006801:Humans; D007223:Infant; D011247:Pregnancy; D011296:Prenatal Diagnosis; D011786:Quality Control; D012306:Risk; D014465:Ultrasonics / Q000009:adverse effects* / Q000592:standards; D014463:Ultrasonography