BibTex format
@inproceedings{Hansell:2003:10.1097/00001648-200309001-00118,
author = {Hansell, A and Knorr-Held, L and Best, N and Schmid, V and Aylin, P},
doi = {10.1097/00001648-200309001-00118},
pages = {S55--S55},
publisher = {LIPPINCOTT WILLIAMS & WILKINS},
title = {COPD mortality trends 1950-1999 in England & Wales - Did the 1956 Clean Air Act make a detectable difference?},
url = {http://dx.doi.org/10.1097/00001648-200309001-00118},
year = {2003}
}