1. Max-Planck Research Unit for Enzymology of Protein Folding, Weinbergweg 22, 06120 Halle (Saale), Germany
2. Department of Dermatology,
Venerology and Allergology, Medical Faculty of the Leipzig University, Ph.-Rosenthal-Strasse
21, 04103 Leipzig, Germany
3. Department of Animal
Sciences, University of Illinois, Urbana 61801, Illinois, United States