RT Journal Article SR Electronic T1 Specific inhalation challenge tests for occupational asthma in Europe: a survey JF European Respiratory Review JO EUROPEAN RESPIRATORY REVIEW FD European Respiratory Society SP 266 OP 270 DO 10.1183/09059180.00000414 VO 23 IS 132 A1 Hille Suojalehto A1 Paul Cullinan YR 2014 UL http://err.ersjournals.com/content/23/132/266.abstract AB