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Title
Smoking and colorectal cancer: a meta-analysis.
Authors
Botteri, Edoardo; Iodice, Simona; Bagnardi, Vincenzo; Raimondi, Sara; Lowenfels, Albert B; Maisonneuve, Patrick
Abstract
Colorectal cancer is the third most common form of cancer and the fourth most frequent cause of cancer deaths worldwide. The association between cigarette smoking and colorectal cancer has been inconsistent among studies.