RT Journal Article SR Electronic T1 The returned traveller JF Clinical Medicine JO Clin Med FD Royal College of Physicians SP 505 OP 509 DO 10.7861/clinmedicine.4-6-505 VO 4 IS 6 A1 Christopher Ellis YR 2004 UL http://www.rcpjournals.org/content/4/6/505.abstract AB