title: Is the increasing prevalence and severity of coal workers' pneumoconiosis in the United States due to increasing silica exposure?
authors.affiliation: Division of Pulmonary and Critical Care Medicine, Stroger Hospital of Cook County, 1900 West Polk Street, Suite #1402 Chicago, IL 60612, USA. bobcohen@uic.edu.
authors.forename: Robert A C
authors.initials: RA
authors.lastname: Cohen
mesh_terms: D055008:Anthracosis / Q000453:epidemiology*; D003032:Coal Mining; D006801:Humans; D009784:Occupational Diseases / Q000453:epidemiology*; D016273:Occupational Exposure / Q000009:adverse effects / Q000032:analysis; D015995:Prevalence; D012822:Silicon Dioxide / Q000633:toxicity*; D012829:Silicosis / Q000453:epidemiology; D014481:United States / Q000453:epidemiology
chemical_list: D012822:Silicon Dioxide