Gupta N, Dudding N, Smith J H F
Department of Cytology, Royal Hallamshire Hospital, Sheffield, UK East Pennine Cytology Training Centre, Raynham House, Capitol Park West, Leeds, UK.
Cytopathology. 2013 Apr;24(2):123-8. doi: 10.1111/j.1365-2303.2011.00945.x. Epub 2012 Jan 4.