title: Background radiation and estimated risks from low-dose irradiation.
mesh_terms: D001417:Background Radiation; D006801:Humans; D008875:Middle Aged; D009381:Neoplasms, Radiation-Induced / Q000401:mortality*; D009784:Occupational Diseases / Q000401:mortality*; D011829:Radiation Dosage; D011839:Radiation, Ionizing; D011859:Radiography / Q000009:adverse effects; D012306:Risk