The New England Journal of Medicine Downloaded from nejm.org at SANTA BARBARA (UCSB) on November 20, 2015. For personal use only. No other uses without permission. From the NEJM Archive. Copyright © 2010 Massachusetts Medical Society. All rights reserved.

The New England Journal of Medicine Downloaded from nejm.org at SANTA BARBARA (UCSB) on November 20, 2015. For personal use only. No other uses without permission. From the NEJM Archive. Copyright © 2010 Massachusetts Medical Society. All rights reserved.

The New England Journal of Medicine Downloaded from nejm.org at SANTA BARBARA (UCSB) on November 20, 2015. For personal use only. No other uses without permission. From the NEJM Archive. Copyright © 2010 Massachusetts Medical Society. All rights reserved.

How safe can cigarettes be?

The New England Journal of Medicine Downloaded from nejm.org at SANTA BARBARA (UCSB) on November 20, 2015. For personal use only. No other uses withou...
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