5 cigarettes a day pack years Pack-year To assess a smoker's lung
To assess a smoker's lung cancer risk, think years not packs Harvard Gazette Calculating Smoking Pack Years Health BeatHealth Beat Smoking a pack a day for a year causes 150 mutations in lung cells What is the packyear smoking history for a patient who smoked one pack per day from age 14 to age 45? Level of use AT Schweiz
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