Initial results of the WHO recommendations on the rational use of diagnostic radiology.
D003955:Diagnostic Tests, Routine / Q000191:economics / Q000592:standards; D004064:Digestive System / Q000000981:diagnostic imaging; D006801:Humans; D011859:Radiography / Q000592:standards*; D013902:Radiography, Thoracic; D012886:Skull / Q000000981:diagnostic imaging; D014944:World Health Organization