These elements individually contribute to high rates of particular cancers but more specifically liver , lung , cervical , oropharyngeal , breast , colon and stomach cancers . Danaei et al analyze a wide array of literature and identified nine behavioral and environmental risk factors that are prevalent and which are argued to contribute to the development of cancer . Table 1 gives an overview of some known cancer types along with figures of the amount of deaths over a five year period up to 2001 . broken...











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