@article{Wang2009,
author = {Wang, Haidong and Preston, Samuel H},
title= {Forecasting United States mortality using cohort smoking histories.},
year = {2009},
URL = {10.1073/pnas.0811809106},
journal = {Proceedings of the National Academy of Sciences of the United States of America},
volume = {106},
number = {2},
pages = {393--398},
}