A Study to Evaluate the Efficacy, Safety, and Drug Concentration of Certolizumab Pegol (CZP) in Children and Adolescent Study Participants With Moderate to Severe Chronic Plaque Psoriasis (PSO)

The purpose of the study is to demonstrate the efficacy and safety of certolizumab pegol in the treatment of moderate to severe chronic plaque psoriasis in study participants aged 6 to 11 and 12 to 17 years.