Dataset from A Phase IIIb, Multinational, Open-label, follow-on Trial to C87085 Designed to Assess the Long-term Safety of Certolizumab Pegol, a Pegylated Fab' Fragment of a Humanized Anti-TNF-alpha Monoclonal Antibody, Administered at Weeks 0, 2 and 4, and Then Every 4 Weeks Thereafter, in Subjects With Moderately to Severely Active Crohn's Disease Who Have Participated in Study C87085

The primary objective of the study is to assess the safety of long term therapy with Certolizumab Pegol in those subjects participating in study C87085 [NCT00552058].