ZENG Yi, LIN Zunqiang, XIA Zhiqian, CAI Tongqiang, LIU Tingting. Clinical observation of low concentration and high volume lidocaine combined with analgesic liquid on nerve block of patients with cervical headacheJ. Journal of Clinical Medicine in Practice, 2013, (24): 24-26,34. DOI: 10.7619/jcmp.201324007