Evaluate Efficacy of Certolizumab in Crohn's Patients With Draining Fistulas

Inclusion Criteria:

• Patients with single or multiple fistulas, including perianal and enterocutaneous fistulas for at least 3 months as a complication of Crohn's disease

Exclusion Criteria:

• Symptomatic obstructive intestinal strictures, bowel resection, proctocolectomy or total colectomy, abscesses present at screening, current total parenteral nutrition, short bowel syndrome.
• All the concomitant diseases or pathological conditions that could interfere with Crohn's disease assessment or to be harmful for the well being of the patient.
• Previous clinical trials and previous biological therapy that could interfere with the results in the present clinical trial