RT Journal Article SR Electronic T1 Finding a visual language for pain JF Clinical Medicine JO Clin Med FD Royal College of Physicians SP 570 OP 571 DO 10.7861/clinmedicine.2-6-570 VO 2 IS 6 A1 Charles Pither YR 2002 UL http://www.rcpjournals.org/content/2/6/570.abstract AB