1. Radiology Unit, National Institute for Digestive Disease, IRCCS “S. de Bellis,” Castellana, Bari, Italy.
2. Laboratory of Biochemistry, National Institute for Digestive Disease, IRCCS “S. de Bellis,” Castellana, Bari, Italy.
3. Laboratory of Epidemiology and Biostatistics, National Institute for Digestive Disease, IRCCS “S. de Bellis,” Castellana, Bari, Italy.
4. Laboratory of Clinical Pathology, National Institute for Digestive Disease, IRCCS “S. de Bellis,” Castellana, Bari, Italy.