title: Fifty years of hope and concern for the future of occupational medicine.
authors.forename: Peter
authors.initials: P
authors.lastname: Orris
mesh_terms: D005544:Forecasting; D049673:History, 20th Century; D006801:Humans; D007750:Labor Unions; D009787:Occupational Medicine / Q000266:history / Q000639:trends*; D014481:United States; D000078329:Workforce