1. Department of Clinical Bacteriology, Parasitology, Zoonoses and Geographical Medicine, Medical School, University of Crete, GR-71110 Heraklion, Greece
2. Department of Medical Protein Research, VIB, B-9000 Ghent, Belgium
3. Department of Biochemistry, Ghent University, B-9000 Ghent, Belgium
4. Division of Biochemistry, Department of Chemistry, University of Crete, P.O. Box 2208, GR-71003 Voutes, Greece