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Difference between revisions of "Pack year"
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[[Image:Marlboro_red_flip_top_NZ.jpg|thumb|right|Packages of cigarettes. (WC)]] | [[Image:Marlboro_red_flip_top_NZ.jpg|thumb|right|Packages of cigarettes. (WC)]] | ||
'''Pack year''', abbreviated '''py''', is way to quantify the amount a person has [[smoking|smoked]]. | '''Pack year''', abbreviated '''py''', is way to quantify the amount a person has [[smoking|smoked]]. | ||
''Pack years'' redirects here. | |||
==Definition== | ==Definition== | ||