1. WHO Collaborating Centre for Clinical Management of Cystic Echinococcosis, Pavia, Italy.
2. Department of Clinical Surgical Diagnostic and Pediatric Sciences, University of Pavia, Pavia, Italy.
3. Hospital Alfredo Callo Rodriguez de Sicuani, Cusco, Peru.
4. Programa de Control de Enfermedades Zoonoticas, Direccion Regional de Salud Cusco, Cusco, Peru.
5. Department of Medicine, Mount Auburn Hospital, Cambridge, Massachusetts.
6. Division of Infectious and Tropical Diseases, San Matteo Hospital Foundation, Pavia, Italy.
7. Travel Medicine Center, Mount Auburn Hospital, Cambridge, Massachusetts.
8. Harvard Medical School, Boston, Massachusetts.
9. Infectious and Tropical Diseases Department, San Bortolo Hospital, Vicenza, Italy.
10. Division of Infectious Diseases, Department of Medicine, University of Texas Medical Branch, Galveston, Texas.
11. Universidad Peruana Cayetano Heredia and University of Texas Medical Branch Collaborative Research Center in Cusco, Cusco, Peru.