[1] Univ Cambridge, Sch Clin Med, Cambridge, Cambs, England
[2] Cambridge Univ Hosp NHS Fdn Trust, Addenbrookes Hosp, Cambridge Breast Unit, Cambridge, Cambs, England
[3] Doncaster Royal Infirm, Jasmine Breast Ctr, Doncaster, S Yorkshire, England
[4] Cambridge Univ Hosp NHS Fdn Trust, Addenbrookes Hosp, Dept Plast & Reconstruct Surg, Box 186,Hills Rd, Cambridge CB2 2QQ, Cambs, England
[5] Univ Sheffield, Sheffield, S Yorkshire, England
[6] Anglia Ruskin Univ, Sch Med, Chelmsford, Essex, England
[7] Anglia Ruskin Univ, Sch Med, Cambridge, Cambs, England