1. Department of Clinical, Surgical, Diagnostic and Paediatric Sciences; University of Pavia; Pavia Italy
2. WHO Collaborating Centre for Clinical Management of Cystic Echinococcosis; Pavia Italy
3. Division of Infectious and Tropical Diseases; San Matteo Hospital Foundation; Pavia Italy
4. Medical Services and Diagnostic; Swiss Tropical and Public Health Institute; Basel Switzerland
5. University of Basel; Basel Switzerland