RT Journal Article SR Electronic T1 The British hypothesis revisited JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 657 OP 658 DO 10.1183/09031936.04.00013004 VO 23 IS 5 A1 N.R. Anthonisen YR 2004 UL http://erj.ersjournals.com/content/23/5/657.abstract AB