Smoking Increases Risk of Common Type of Breast Cancer - Reuter

http://4crucial.info/smoking-breast-cancer-reuter
Smoking Increases Risk of Common Type of Breast Cancer - Reuter
Researchers found that women between 20 and 44 years old who had smoked a pack of cigarettes per day for at least 10 years were 60 percent more likely than those who smoked less to develop so-called estrogen receptor-positive breast cancer.