[1] Mokhuri Neck & Back Hosp, Dept Spine Ctr, Seoul 06272, South Korea
[2] Korea Inst Oriental Med, Clin Res Div, Daejeon 34054, South Korea
[3] Univ Sci & Technol, Korean Med Life Sci, Daejeon 34113, South Korea
[4] Korea Inst Oriental Med, Mibyeong Res Ctr, Daejeon 34054, South Korea
[5] Mayo Clin, Dept Phys Med & Rehabil, Rochester, MN 55905 USA
[6] Mayo Clin, Div Pain Med, Dept Anesthesiol, Rochester, MN 55905 USA
[7] Kyung Hee Univ, Korean Med Hosp, Korean Med Clin Trial Ctr, Seoul 02447, South Korea