@article{Postma2015,
author = {Postma, D.S. and Bush, A. and Berge, M.},
title= {Risk factors and early origins of chronic obstructive pulmonary disease},
year = {2015},
doi = {10.1016/S0140-6736(14)60446-3},
volume = {385},
number = {9971},
pages = {899--909},
}