title: A letter from Nigel Gray.
authors.forename: Nigel
authors.initials: N
authors.lastname: Gray
mesh_terms: D006801:Humans; D012906:Smoke / Q000032:analysis*; D000074606:Smoking Prevention; D014028:Tobacco Smoke Pollution / Q000032:analysis*; D014944:World Health Organization
chemical_list: D012906:Smoke; D014028:Tobacco Smoke Pollution