1. Department of Clinical Sciences L. Sacco
University of Milan
Via GB Grassi 74, 20157 Milan, Italy
2. I Division of Infectious Diseases
L. Sacco Hospital
Milan, Italy
3. II Division of Infectious Diseases
L. Sacco Hospital
Milan, Italy
4. Pathology Unit
L. Sacco Hospital
Via GB Grassi 74, 20157 Milan, Italy