1. Department of Clinical-Surgical, Diagnostic and Pediatric Sciences, University of Pavia, Pavia, Italy.
2. World Health Organization Collaborating Centre for the Clinical Management of Cystic Echinococcosis, Pavia, Italy.
3. Department of Veterinary Integrative Biosciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas.
4. Division of General Surgery, San Matteo Hospital Foundation, Pavia, Italy.
5. Division of Infectious and Tropical Diseases, San Matteo Hospital Foundation, Pavia, Italy.