title: A weighty issue.
mesh_terms: D004787:Environmental Pollution; D005742:Gasoline / Q000633:toxicity*; D006801:Humans; D007854:Lead / Q000633:toxicity*; D010578:Petroleum / Q000633:toxicity*; D006113:United Kingdom
chemical_list: D005742:Gasoline; D010578:Petroleum; D007854:Lead