The World Health Organization three-step analgesic ladder ...

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pain relief, such as disease-modifying therapies, non-pharmacological therapies, and interventional therapies.7 However, the WHO guidelines do endorse the use of these other treatment modalities, although they do not appearon the illustration of the three-step ladder. Cancer PainRelief contains much moreinformationthan just the

  Interventional, Therapies, Interventional therapies