title: Leslie L. Lumsden, MD: pioneer in rural sanitation and early epidemiology in the United States.
mesh_terms: D004813:Epidemiology / Q000266:history*; D049673:History, 20th Century; D012423:Rural Health; D012499:Sanitation / Q000266:history*; D014481:United States; D014492:United States Public Health Service / Q000266:history