No smoke without fire.
Watson
S
S
D001249:Asthma / Q000209:etiology*; D006801:Humans; D009735:Nursing Homes; D009740:Nursing Staff / Q000331:legislation & jurisprudence*; D009784:Occupational Diseases / Q000209:etiology*; D014028:Tobacco Smoke Pollution / Q000009:adverse effects* / Q000331:legislation & jurisprudence*; D006113:United Kingdom
D014028:Tobacco Smoke Pollution