The silent majority.
D006801:Humans; D007629:Kentucky; D008119:Lobbying; D024802:Nurse's Role / Q000523:psychology; D011634:Public Health / Q000331:legislation & jurisprudence; D014028:Tobacco Smoke Pollution / Q000009:adverse effects / Q000331:legislation & jurisprudence / Q000517:prevention & control
D014028:Tobacco Smoke Pollution