Published by European Respiratory Society Journals Ltd ©2006 December 2006 Hardback ISBN 10: 1-904097-44-8 Hardback ISBN 13: 978-1-904097-44-0 Paperback ISBN 10: 1-904097-48-0 Paperback ISBN 13: 978-1-904097-48-8 ISSN: 1025-448x Printed by The Charlesworth Group, Wakefield, UK Business matters (enquiries, advertisement bookings) should be addressed to: European Respiratory Society Journals Ltd, Publications Office, Suite 2.4, Hutton's Building, 146 West Street, Sheffield, S1 4ES, UK. Fax: 44 114 2780501. All material is copyright to European Respiratory Society Journals Ltd. It may not be reproduced in any way including electronic means without the express permission of the company. Statements in the volume reflect the views of the authors, and not necessarily those of the European Respiratory Society, editors or publishers. Mon 38 page iv.qxd 29/7/09 18:13 Page 1