TY - JOUR T1 - “Incidence of probable occupational asthma and changes inairway calibre and responsiveness in apprentice welders”. M. El­Zein, J‐L. Malo, C. Infante­Rivard, D. Gautrin. <em>Eur Respir J</em> 2003; 22: 513–518. JF - European Respiratory Journal JO - Eur Respir J SP - 867 LP - 867 DO - 10.1183/09031936.03.00000003b VL - 22 IS - 5 A2 - , Y1 - 2003/11/01 UR - http://erj.ersjournals.com/content/22/5/867.abstract N2 - Unfortunately, some of the data … ER -