Golimumab, a Human Anti-Tumor Necrosis Factor Monoclonal Antibody, Injected Subcutaneously Every 4 Weeks in Patients With Active Rheumatoid Arthritis Who Had Never Taken Methotrexate: 1-Year and 2-Year Clinical, Radiologic, and Physical Function Findings: Efficacy and Safety of Golimumab in MTX-Naive RA Patients