title: Present status of medical study on thorotrast-administered patients in Japan.
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007564:Japan; D008297:Male; D008875:Middle Aged; D009381:Neoplasms, Radiation-Induced / Q000453:epidemiology* / Q000209:etiology; D011829:Radiation Dosage; D011832:Radiation Injuries / Q000453:epidemiology* / Q000209:etiology; D012306:Risk; D013911:Thorium Dioxide / Q000009:adverse effects*; D013997:Time Factors
chemical_list: D013911:Thorium Dioxide