BibTex format
@inproceedings{Filippidis:2017:10.1183/1393003.congress-2017.PA1252,
author = {Filippidis, FT and Vardavas, CI},
doi = {10.1183/1393003.congress-2017.PA1252},
publisher = {EUROPEAN RESPIRATORY SOC JOURNALS LTD},
title = {Trends in exposure to secondhand smoke in the European Union, 2009-2014},
url = {http://dx.doi.org/10.1183/1393003.congress-2017.PA1252},
year = {2017}
}