Lymphoma in coal-mine employees.
D003032:Coal Mining; D006689:Hodgkin Disease / Q000453:epidemiology*; D006801:Humans; D008228:Lymphoma, Non-Hodgkin / Q000453:epidemiology*; D008297:Male; D009784:Occupational Diseases / Q000453:epidemiology*; D013029:Space-Time Clustering