In the Letter to the Editor by Zimmermann et al. (Pediatr Res 54:554–555, 2003) there is an error in the listing of authors. The corrected listing of authors appears below. The authors regret this error.

Klaus Zimmermann

Baxter BioScience, Industriestrasse 72

A-1220 Vienna, Austria

zimmerk@baxter.com

Dirk Völkel

Baxter BioScience, Industriestrasse 72

A-1220 Vienna, Austria

Friedrich Scheiflinger

Baxter BioScience, Wagramer Strasse 17-19

A-1220 Vienna, Austria