 - Phase II week 54-108: proportion of patients in CCR with mucosal healing endoscopic Mayo score of 0 or 1 at week 108, after discontinuation or dose de-escalation from 100 to 50 mg of golimumab treatment at year 1 in the subgroup of patients in continuous clinical response CCR and with mucosal healing endoscopic Mayo score of 0 or 1 at week 54 