@article{Engholm1996,
author = {Engholm, G. and Palmgren, F. and Lynge, E.},
title= {Lung cancer, smoking, and environment: A cohort study of the Danish population},
year = {1996},
doi = {10.1136/bmj.312.7041.1259},
journal = {British Medical Journal},
volume = {312},
number = {7041},
pages = {1259--1263},
}