Avoiding unnecessary X-ray exposure in children.
D002648:Child; D002675:Child, Preschool; D004064:Digestive System / Q000000981:diagnostic imaging; D005121:Extremities / Q000000981:diagnostic imaging; D006801:Humans; D007223:Infant; D011832:Radiation Injuries / Q000517:prevention & control*; D011835:Radiation Protection; D011859:Radiography / Q000706:statistics & numerical data*; D011860:Radiography, Abdominal; D013902:Radiography, Thoracic / Q000706:statistics & numerical data; D012886:Skull / Q000000981:diagnostic imaging; D013131:Spine / Q000000981:diagnostic imaging; D014567:Urography