RT Journal Article SR Electronic T1 Understanding pain: the enigma of pain and suffering JF Clinical Medicine JO Clin Med FD Royal College of Physicians SP 574 OP 577 DO 10.7861/clinmedicine.2-6-574 VO 2 IS 6 A1 Nicholas G N Shenker A1 David R Blake YR 2002 UL http://www.rcpjournals.org/content/2/6/574.abstract AB