[1] Cambridge Univ Hosp NHS Fdn Trust, Dept Plast & Reconstruct Surg, Cambridge CB2 0QQ, England
[2] Cambridge Univ Hosp NHS Fdn Trust, Dept Plast & Reconstruct Surg, Cambridge Breast Unit, Cambridge CB2 0QQ, England
[3] Anglia Ruskin Univ, Postgrad Med Inst, Chelmsford, Essex, England
[4] Anglia Ruskin Univ, Postgrad Med Inst, Cambridge, England