Use of Crohn's Disease Exclusion Diet on Top of Standard Therapy Versus Standard Therapy Alone in Unstable Pediatric Crohn's Disease Patients.

from D0 until M2: Phase 1 (2 months run-in phase with CDED protocol + maintenance therapy, with the exception of corticosteroid that have to be tapered and stopped until M2.)

from M2 until M4 CDED phase 2 (introduction of a selected number of additional food). From M4 until end of the study CDED phase 3 (enlargement of number of additional foods and allowance of some initially excluded foods).