Mesh : Adjuvants, Pharmaceutic / administration & dosage therapeutic use Analgesia / methods standards Analgesia, Epidural Analgesics / administration & dosage classification therapeutic use Combined Modality Therapy Disease Management Drug Administration Routes Evidence-Based Medicine Humans Infusion Pumps, Implantable Injections, Intraventricular Neoplasms / physiopathology Nerve Block Pain / drug therapy etiology psychology radiotherapy surgery Pain Management Patient Selection Physical and Rehabilitation Medicine / methods