Clinical Effect of Transcuataneous Electrical Nerve Stimulation in the Treatment of Opioid Analgesic Insufficiency of Bone Metastases Cancer Pain 
DU Weibin,BAO Guanai,SHEN Fuxiang,HU Huahui,CHEN Rongliang,QUAN Renfu
Chinese General Practice . 2019, (32): 3997 -4001 .  DOI: 10.12114/j.issn.1007-9572.2019.00.078