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LONDON - JULY 18: In this photo illustration a pregnant woman is seen holding a cigarette on July 18, 2005, London, England. Research has shown that smoking during pregnancy damages a baby's airways before the child is born. (Photo illustration by Daniel Berehulak/Getty Images)

LONDON - JULY 18:  In this photo illustration a pregnant woman is seen holding a cigarette on July 18, 2005, London, England. Research has shown that smoking during pregnancy damages a baby's airways before the child is born. (Photo illustration by Daniel Berehulak/Getty Images)