%0 Journal Article %E Simon Thomas %A Sally Bradberry %A Allister Vale %T Epidemiology and clinical presentation %D 2008 %R 10.7861/clinmedicine.8-1-86 %J Clinical Medicine %P 86-88 %V 8 %N 1 %U https://www.rcpjournals.org/content/clinmedicine/8/1/86.full.pdf