Fig. 3. The active tip of the needle was wrapped by ovalbumin in CRF group (A) and DCRF (B). CRF: radiofrequency thermocoagulation, DCRF: double neddles radiofrequency thermocoagulation.

Korean J Pain 2022;35:114~123 https://doi.org/10.3344/kjp.2022.35.1.114

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