Image: British doctors study 40
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Description: British doctors study: survival from age 40 of non-smokers, cigarette smokers and ex-smokers.
Title: British doctors study 40
Credit: Own work, Doll R, Peto R, Boreham J, Sutherland I., « Mortality in relation to smoking: 50 years' observation on male British doctors », BMJ, vol. 328, no 7455, 2004, p. 1519 https://www.ncbi.nlm.nih.gov/pubmed/15213107, data courtesy of Dr Hongchao Pan
Author: The RedBurn
Usage Terms: Creative Commons Attribution-Share Alike 4.0
License: CC BY-SA 4.0
License Link: https://creativecommons.org/licenses/by-sa/4.0
Attribution Required?: Yes
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