1. Department of Surgical, Medical, Dental and Morphological Sciences, Modena, Italy;
2. Modena HIV Metabolic Clinic, University of Modena and Reggio Emilia, Modena, Italy;
3. Department of Infectious Diseases, Azienda Ospedaliero-Universitaria Policlinico of Modena, Modena, Italy;
4. School of Computing, Newcastle University, Newcastle upon Tyne, United Kingdom; and
5. Department of Physical, Computer and Mathematical Sciences, University of Modena and Reggio Emilia, Modena, Italy.