1. Institute of Infectious Diseases and Public Health, Università Politecnica delle Marche
2. Department of General Surgery, I.N.R.C.A. I.R.C.C.S., Università Politecnica delle Marche
3. Biotechnology Centre, Research Department, I.N.R.C.A. I.R.C.C.S., Ancona
4. Faculty of Pharmacy, Medical University of Gdańsk, Gdańsk, Poland
5. Institute of Biomathematics, Faculty of Pharmacy, University of Urbino, Urbino, Italy