1. Territorial Gastroenterology Service, ASL BAT, Andria (BT), Italy
2. Division of Surgery, “P. Colombo” Hospital, ASL Roma 6, Velletri (Rome), Italy
3. Division of Gastroenterology, “S. Camillo” Hospital, Rome, Italy
4. Division of Gastroenterology, “Santa Caterina Novella” Hospital, Galatina (LE), Italy
5. Division of Internal Medicine, “Card. Panico” Hospital, Tricase (LE), Italy
6. Division of Gastroenterology, IRCCS “Casa Sollievo della Sofferenza” Hospital, S. Giovanni Rotondo (FG), Italy
7. Division of Gastroenterology and Digestive Endoscopy, “A. Perrino” Hospital, Brindisi, Italy
8. Territorial Gastroenterology Service, Mesagne Territorial Hospital, ASL BR, Mesagne (BR), Italy
9. Department of Health Sciences, Magna Graecia University, Catanzaro, Italy
10. Territorial Gastroenterology Service, ASL FG, Foggia, Italy
11. Ambulatory of Territorial Gastroenterology, ASL BA, Bari, Italy
12. Ambulatory of Digestive Endoscopy, “Valle D’Itria” Hospital, Martina Franca (TA), Italy
13. Division of Internal Medicine and Gastroenterology, “Cristo Re” Hospital, Rome, Italy
14. General Pratictioner, Cicciano, Naples, Italy
15. General Pratictioner and Private Gastroenterologist, Bisceglie (Barletta-Andria-Trani), Italy
16. General Pratictioner, Palese, Bari, Italy
17. General Pratictioner, Bari, Italy
18. General Pratictioner and Private Gastroenterologist, S. Ferdinando di Puglia (Barletta-Andria-Trani), Italy
19. General Pratictioner, Lucera (FG), Italy
20. General Pratictioner, Lapio (AV), Italy
21. General Pratictioner, Grumo Appula, Bari, Italy
22. General Pratictioner, Bitetto, Bari, Italy
23. General Pratictioner, Monopoli, Bari, Italy
24. General Pratictioner, Conversano, Bari, Italy
25. General Pratictioner, Parabita, Bari, Italy
26. General Pratictioner, Noicattaro, Bari, Italy
27. General Pratictioner, Triggiano, Bari, Italy
28. General Pratictioner and Private Neurologist, Bari, Italy
29. General Pratictioner, Corato, Bari, Italy
30. General Pratictioner, Bitonto, Bari, Italy
31. General Pratictioner, Trani (Barletta-Andria-Trani), Italy
32. General Pratictioner, Molfetta, Bari, Italy
33. General Pratictioner, Gioia del Colle, Bari, Italy
34. General Pratictioner, Terzigno, Naples (NA), Italy
35. General Pratictioner, Faggiano (TA), Italy
36. General Pratictioner, Avellino, Italy
37. General Pratictioner and Private Endocrinologist, Bari, Italy
38. General Pratictioner and Private Hematologist, Bari, Italy