Jessica R Beavan1
, Simon Conroy1
, Jo Leonardi-Bee1
, Tim Bowling2
, Catherine Gaynor2
, John Gladman1
, Dawn Good3
, Peter Gorman4
, Rowan Harwood3
, Jan Riley2
, Tracey Sach1
and Wayne Sunman3 
1Nottingham University School of Community Health Sciences, B Floor, Medical School, Queen's Medical Centre, Nottingham, NG7 2UH, UK
2Queen's Medical Centre, Nottingham University Hospitals Trust, Derby Road, Nottingham, NG7 2UH, UK
3Nottingham City Hospital Campus, Nottingham University Hospitals Trust, Hucknall Road, Nottingham, NG5 1PB, UK
4Derbyshire Royal Infirmary, London Road, Derby, DE1 2QY, UK