1. Ambulatory of Clinical Nutrition, National Institute of Gastroenterology, Research Hospital, IRCCS “Saverio de Bellis” of Castellana Grotte (BA), Italy
2. Unit of Gastrenterology 1, National Institute of Gastroenterology, Research Hospital, IRCCS “Saverio de Bellis” of Castellana Grotte (BA), Italy
3. Laboratory of Nutritional Biochemistry, National Institute of Gastroenterology, Research Hospital, IRCCS “Saverio de Bellis” of Castellana Grotte (BA), Italy
4. Unit of Epidemiology and Biostatistics, National Institute of Gastroenterology, Research Hospital, IRCCS “Saverio de Bellis” of Castellana Grotte (BA), Italy
5. Unit of Radiology, National Institute of Gastroenterology, Research Hospital, IRCCS “Saverio de Bellis” of Castellana Grotte (BA), Italy
6. Laboratory of Clinical Pathology, National Institute of Gastroenterology, Research Hospital, IRCCS “Saverio de Bellis” of Castellana Grotte (BA), Italy