The need for radiation protection.
D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D007564:Japan; D008297:Male; D008875:Middle Aged; D009381:Neoplasms, Radiation-Induced / Q000209:etiology; D009689:Nuclear Warfare; D011247:Pregnancy; D011831:Radiation Genetics; D011832:Radiation Injuries / Q000453:epidemiology / Q000209:etiology / Q000401:mortality; D011835:Radiation Protection; D011859:Radiography / Q000009:adverse effects*; D013679:Technology, Radiologic / Q000592:standards; D014481:United States