RT Journal Article SR Electronic T1 Chronic disease JF Clinical Medicine JO Clin Med FD Royal College of Physicians SP 297 OP 298 DO 10.7861/clinmedicine.4-4-297 VO 4 IS 4 A1 Peter Watkins YR 2004 UL http://www.rcpjournals.org/content/4/4/297.abstract AB