1. Unit of Internal Medicine, IRCCS “Casa Sollievo della Sofferenza” Hospital, San Giovanni Rotondo;
2. Unit of Pathology, IRCCS “Casa Sollievo della Sofferenza” Hospital, San Giovanni Rotondo;
3. Unit of Oncology, IRCCS “Casa Sollievo della Sofferenza” Hospital, San Giovanni Rotondo;
4. Department of Medical Science, University of Foggia, Foggia, Italy