RT Journal Article SR Electronic T1 Sodium valproate for severe neuropathic pain in advanced cancer JF BMJ Supportive & Palliative Care JO BMJ Support Palliat Care FD British Medical Journal Publishing Group SP e763 OP e764 DO 10.1136/spcare-2023-004259 VO 13 IS e3 A1 Helen Crispin YR 2023 UL http://spcare.bmj.com/content/13/e3/e763.abstract AB