Ulm University Hospital, Mozartstrasse 22/1, Ulm D-89075, Germany
Corresponding Author InformationTel.: +497-3166399; fax: +497-3150033155.
PII: S0165-5876(03)00266-0
doi:10.1016/j.ijporl.2003.08.013
© 2003 British Association for Paediatric Otorhinolaryngology. Published by Elsevier Inc. All rights reserved.