Eight-year results of a randomized clinical trial comparing total mastectomy and lumpectomy with or without irradiation in the treatment of breast cancer. - Fisher,B.; Redmond,C.; Poisson,R.; Margolese,R.; Wolmark,N.; Wickerham,L.; Fisher,E.; Deutsch,M.; Caplan,R.; Pilch,Y. (N Engl J Med, 1989)