1. lstituto di Chimica Biologica ‘G. Fornaini’, Università degli Studi “Carlo Bo”, Via Saffi, 2, 61029 Urbino, Italy
2. Centre for Infections, HPA (Colindale), 61 Colindale Avenue, London, NW9 5HT, UK
3. University of Applied Science Bremerhaven, Faculty I, An der Karlstadt 8 – 27568 Bremerhaven, Germany
4. Department of Biosciences, University of Kent, Canterbury, Kent, CT2 7NJ, UK