1. Department of Medical Sciences, University of Trieste, Cattinara Teaching Hospital, Trieste, Italy;
2. Cattinara Teaching Hospital, ASUITS, Trieste, Italy;
3. Department of Medical, Surgical and Health Sciences, Biostatistic Unit, Cattinara Teaching Hospital, Trieste, Italy;
4. Radiology Department, Maggiore Teaching Hospital, ASUITS, Trieste, Italy