Curative Effect of Patient-controlled Intravenous Analgesia with Hydromorphone, Sufentanil or Morphine in Treatment of Refractory Cancer Pain with Dysphagia
ZENG Yuan, WANG Guohua, YANG Yong
Chinese General Practice . 2022, (36): 4537 -4545 .  DOI: 10.12114/j.issn.1007-9572.2022.0430