RT Journal Article SR Electronic T1 Epidemiology and clinical presentation JF Clinical Medicine JO Clin Med FD Royal College of Physicians SP 86 OP 88 DO 10.7861/clinmedicine.8-1-86 VO 8 IS 1 A2 Simon Thomas A1 Sally Bradberry A1 Allister Vale YR 2008 UL http://www.rcpjournals.org/content/8/1/86.abstract AB