title: The source of sick buildings.
mesh_terms: D000328:Adult; D016902:Air Pollution, Indoor / Q000009:adverse effects; D002648:Child; D005658:Fungi / Q000737:chemistry*; D006801:Humans; D012574:Schools; D018877:Sick Building Syndrome / Q000382:microbiology*; D014481:United States; D014691:Ventilation