1 Department of Internal Medicine, Interventional Ultrasound Section, Unit of Internal Medicine, IRCCS Casa Sollievo Della Sofferenza, San Giovanni Rotondo, Italy E-mail: elisabettamaria.frongillo@gmail.com.
2 Department of Internal Medicine, Unit of Pathology, IRCCS Casa Sollievo Della Sofferenza, San Giovanni Rotondo, Italy.
3 Department of Pathology, Unit of Pathology, IRCCS Casa Sollievo Della Sofferenza, San Giovanni Rotondo, Italy.