Radiation.
D000328:Adult; D002648:Child; D005260:Female; D005333:Fetus / Q000528:radiation effects; D006801:Humans; D009381:Neoplasms, Radiation-Induced; D009784:Occupational Diseases / Q000209:etiology; D011247:Pregnancy; D013964:Thyroid Neoplasms / Q000209:etiology