Gallus and his colleagues acknowledge themselves that their study had a limited sample size and needs to be verified with larger studies
OG was also supported in part by the Rutgers Cancer Institute of New Jersey under P30CA07270-5931
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You can find more information on the chemicals in cigarettes that cause cancer and what smoking does to the body on our webpage
A spokesman for the Tobacco Manufacturers Association in the UK said: Cigarettes manufactured here do abide by the permitted list and may be quite different from those in America. A spokesman for Phillip Morris, the maker of Marlboro, said: Ammonia is a compound naturally present in tobacco leaf