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Moreover, in order to clarify the previously proposed methodological problems of abstainers misclassification, sick quitter hypothesis, and potentially confounding factors 17 , we categorized drinking status of ex-drinkers into regular drinker to avoid misclassifying the former drinkers as abstainers and controlled 15 confounders to minimize confounding

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Until they know the stage, the cell type and how the patient's going to respond to their treatment, they have no idea what their life expectancy is

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