1. Department of Pharmacology and Experimental Therapeutics, Tufts University School of Medicine, Boston, MA 02111, U.S.A.
2. Department of Parasitology, Veterinary School, Aristotelian University, Thessaloniki, Greece, University of Chieti, Chieti, Italy
3. Department of Biomedical Sciences, University of Chieti, Chieti, Italy
4. Medical School, University of Chieti, Chieti, Italy
5. Neonatology and Pediatrics Division and University of Chieti, Chieti, Italy
6. Emergency Division, University of Chieti, Chieti, Italy
7. Allergy Division, University of Chieti, Chieti, Italy