title: NCI to consider adding medical x-rays to human carcinogen list.
mesh_terms: D002273:Carcinogens / Q000145:classification*; D006079:Government Publications as Topic; D006801:Humans; D009369:Neoplasms / Q000209:etiology*; D014481:United States; D014483:United States Dept. of Health and Human Services; D014965:X-Rays / Q000009:adverse effects*
chemical_list: D002273:Carcinogens