1. University Division of Infectious and Tropical Diseases, University of Brescia, Brescia, Italy.
2. Department of Experimental and Applied Medicine, Institute of Hygiene, Epidemiology and Public Health, University of Brescia, Brescia, Italy.
3. Department of Infectious and Tropical Diseases, Spedali Civili of Brescia, Brescia, Italy.
4. Brescia HIV Study Cancer Group: S. Casari,3 F. Castelnuovo,3 C. Cattaneo,6 Andrea Festa,2 M. Magoni,5 C. Paraninfo,3 A. Re,6 C. Scarcella,5 and C. Torti1