1. University of Colorado Anschutz Medical Campus, Aurora, CO, USA
2. University of Texas Houston, Houston, TX, USA
3. Department of Surgical, Medical, Dental and Morphological Sciences, Modena HIV Metabolic Clinic, University of Modena and Reggio Modena, Italy
4. Department of Medical and Surgical Sciences for Children and Adults, Radiology Unit, University of Modena and Reggio Emilia, Italy