RT Journal Article SR Electronic T1 The Relief of Pain in Far-Advanced Cancer JF Regional Anesthesia: The Journal of Neural Blockade in Obstetrics, Surgery, & Pain Control JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP 2 OP 11 DO 10.1136/rapm-00115550-198007000-00002 VO 5 IS 3 A1 Robert G. Twycross YR 1980 UL http://rapm.bmj.com/content/5/3/2.2.abstract AB