RT Journal Article SR Electronic T1 Evidence based physical diagnosis, 2nd edn JF Clinical Medicine JO Clin Med FD Royal College of Physicians SP 112 OP 112 DO 10.7861/clinmedicine.8-1-112 VO 8 IS 1 A1 Sherif Gonem YR 2008 UL http://www.rcpjournals.org/content/8/1/112.abstract AB