1. Gastroenterology Unit; Costa del Sol Sanitary Agency
2. Research Unit; Research Network of Health Services in Chronic Diseases-REDISSEC; Marbella
3. Gastroenterology Unit; Guadix HAR; Guadix Granada
4. Pediatrics Unit; Costa del Sol Sanitary Agency
5. Radiology Unit; Guadix HAR; Guadix Granada
6. Medicine Department and CIBERehd; Malaga University; Malaga Spain
7. Research Unit; Costa del Sol Sanitary Agency