RT Journal Article SR Electronic T1 A day at the European Respiratory Society Congress: passive smoking influences both outdoor and indoor air quality JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 862 OP 863 DO 10.1183/09031936.06.00148505 VO 27 IS 4 A1 R. Boffi A1 A. Ruprecht A1 R. Mazza A1 M. Ketzel A1 G. Invernizzi YR 2006 UL http://erj.ersjournals.com/content/27/4/862.abstract AB