RT Journal Article SR Electronic T1 Dental units as infection sources of Pseudomonas aeruginosa JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 1122 OP 1123 DO 10.1183/09031936.00072808 VO 32 IS 4 A1 J. Barben A1 J. Schmid YR 2008 UL http://erj.ersjournals.com/content/32/4/1122.abstract AB