Clinical Observation on Auricular Acupressure Therapy Combined with Three-step Analgesic Ladder Therapy for Moderate to Severe Cancer Pain 
SHI Junjing,JIANG Hua,LIU Ronghui,XU Gaojie,DING Chunmei,HUANG Jinwei,QIN Jin,WANG Zhaoxin
Chinese General Practice . 2019, (35): 4392 -4396 .  DOI: 10.12114/j.issn.1007-9572.2019.00.712