- Dr E von Mutius, Dr von Haunersche Kinderklinik, Klinikum Innenstadt, Lindwurmstrasse 4, D-80337 München, Germany email:
- Received May 20, 1999
- Revision requested July 8, 1999
- Revised August 25, 1999
- Accepted September 7, 1999
- First published June 1, 2000.
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