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The efficacy outcomes after coblationdiscoplasty in 12 months follow-up. (a) Comparison of CDG VAS between two groups; (b) Comparison of neck pain VAS between two groups; (c) Comparison of CGD frequency score between two groups; (d) Comparison of CGD alleviation rating between two groups. B: baseline; P: post-operative; w: week; m: month; “__” indicates medium; “--->” indicates 25th quartile; “–>” indicates 75th quartile.
