title: Questions persist: environmental factors in autoimmune disease.
authors.forename: Charles W
authors.initials: CW
authors.lastname: Schmidt
mesh_terms: D001327:Autoimmune Diseases / Q000145:classification / Q000453:epidemiology* / Q000209:etiology*; D003922:Diabetes Mellitus, Type 1 / Q000453:epidemiology / Q000209:etiology; D004781:Environmental Exposure; D012307:Risk Factors; D014481:United States / Q000453:epidemiology