Restrictive smoking policies in the workplace: effects on smoking prevalence and cigarette consumption.
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S. Kelder | R. Jeffery | S. French | J. Baxter | H. Lando | J. Forster | Robert W. Jeffery | Steven H. Kelder | Jean L. Forster | Simone A. French | Harry A. Lando | R. W. Jeffery | J. L. Forster | S. French