Sentinel node biopsy for malignant melanoma

An editorial error occurred in the first letter of this cluster by S Rayatt and S Hettiaratchy (8 November, p 1285). A misunderstanding resulted in the omission of two authors and the wrong address being given for where the work was done. The authors should have been: S S Rayatt, registrar, S Hettiaratchy, senior house officer, A Key, research registrar (psychiatry), and B W E M Powell, consultant plastic surgeon, all from the Melanoma Unit, St George's Hospital, London SW17 0QT.