Grainger J, Heaver R, Courteney-Harris R G
Department of Otolaryngology, City General Hospital, University Hospital of North Staffordshire NHS Trust, Stoke-on-Trent, UK.
BMJ Case Rep. 2009;2009:bcr2007132993. doi: 10.1136/bcr.2007.132993. Epub 2009 Jan 8.