Efficacy and Safety of Increased Dose of TA-650 (Infliximab) in Patients With Crohn's Disease (CD)

(1) Screening Period: 5 mg/kg of TA-650 will be intravenously infused over a period of more than 2 hours at week 0. If patients do not meet the Eligibility Criteria at week 8, they will be administered 5 mg/kg of TA-650 at week 8. (2) Increased Dose Period: 10 mg/kg of TA-650 will be intravenously infused over a period of more than 2 hours every 8 weeks for 32 weeks.