Poolman M, Makin M, Briggs J, Scofield K, Campkin N, Williams M, Sharma ML, Laird B, Mayland CR. Percutaneous cervical cordotomy for cancer-related pain: national data. BMJ Supportive & Palliative Care 2020;10:429-434. doi: 10.1136/bmjspcare-2019-002057