title: A report on brain tumors from a retrospective cohort study of refinery workers.
mesh_terms: D000328:Adult; D000368:Aged; D001932:Brain Neoplasms / Q000139:chemically induced / Q000401:mortality*; D002617:Chemical Industry; D004651:Employment; D006801:Humans; D008297:Male; D008875:Middle Aged; D009784:Occupational Diseases / Q000139:chemically induced / Q000401:mortality*; D010578:Petroleum; D012189:Retrospective Studies; D013781:Texas
chemical_list: D010578:Petroleum