title: Carcinogenetic hazard from natural background radiation in Japan.
mesh_terms: D001417:Background Radiation / Q000009:adverse effects*; D002274:Carcinogens, Environmental; D005260:Female; D006801:Humans; D007564:Japan; D008297:Male; D009381:Neoplasms, Radiation-Induced / Q000209:etiology; D011839:Radiation, Ionizing / Q000009:adverse effects*; D013274:Stomach Neoplasms / Q000401:mortality
chemical_list: D002274:Carcinogens, Environmental