@article{Doll1994,
author = {Doll, R. and Peto, R. and Wheatley, K. and Gray, R. and Sutherland, I.},
title= {Mortality in relation to smoking: 40 years’ observations on male British doctors},
year = {1994},
doi = {10.1136/bmj.309.6959.901},
URL = {https://doi.org/10.1136/bmj.309.6959.901},
volume = {309},
number = {6959},
pages = {901‒911},
}