Affiliation: | (1) University of Freiburg Children's Hospital, Mathildenstrasse 1, 79106 Freiburg, Germany e-mail: BERNER@KKL200.UKL.UNI-FREIBURG-DE Tel.: +49-761-2704300; Fax: +49-761-2704481, DE;(2) Department of Virology, University of Freiburg, 79104 Freiburg, Germany, DE |