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| Effect of Radiofrequency Pulse of Posterior Branch of Cervical Spinal Nerve Combined with Tizanidine Hydrochloride in the Treatment of Cervical Headache and Its Effect on Vascular Endothelial Function |
| LI Jinhu, GU Fang, CHEN Xiaoxi, SUN Yingqun, SONG Yunchuan, HE Jinliang |
| First-author's address: Beijing Daxing District Hospital of Integrated Chinese and Western Medicine, Beijing 100076, China |
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Received: 21 September 2022
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