@article {1433557,
	title = {Life-Course Smoking Trajectories and Risk for Emphysema in Middle Age: The CARDIA Lung Study},
	journal = {Am J Respir Crit Care Med},
	volume = {199},
	number = {2},
	year = {2019},
	month = {2019 Jan 15},
	pages = {237-240},
	issn = {1535-4970},
	doi = {10.1164/rccm.201808-1568LE},
	author = {Mathew, Amanda R and Bhatt, Surya P and Colangelo, Laura A and Allen, Norrina B and Jacobs, David R and Auer, Reto and Dransfield, Mark T and Hitsman, Brian and Washko, George R and Kalhan, Ravi}
}