Mechanical white elephants.
D000368:Aged; D001291:Attitude of Health Personnel; D001315:Australia; D002648:Child; D019411:Clinical Laboratory Techniques; D005260:Female; D005102:Health Expenditures; D006801:Humans; D008297:Male; D009154:Mutation / Q000528:radiation effects; D009381:Neoplasms, Radiation-Induced / Q000209:etiology; D011247:Pregnancy; D011829:Radiation Dosage; D011859:Radiography