Erratum to “Low Baseline Interleukin-17A Levels Are Associated with Better Treatment Response at 12 Weeks to Tocilizumab Therapy in Rheumatoid Arthritis Patients” - Sang Jin Lee; Won Park; Sung Hwan Park; Seung-Cheol Shim; Han Joo Baek; Dae-Hyun Yoo; Hyun Ah Kim; Soo Kon Lee; Yun Jong Lee; Young Eun Park; Hoon-Suk Cha; Jin Kyun Park; et al. (Journal of Immunology Research)