1. Institute of Molecular Biology and Biotechnology; Foundation for Research & Technology; Iraklio Greece
2. Department Pathology & Laboratory Medicine, Perelman School of Medicine; University of Pennsylvania; Philadelphia USA
3. Department of Biology; University of Crete; Iraklio Greece
4. Laboratory of Molecular Bacteriology, Rega Institute, Department of Microbiology and Immunology; Katholieke Universiteit Leuven; Leuven Belgium