Efficacy of bilateral prophylactic mastectomy in women with a family history of breast cancer. - Hartmann,L.C.; Schaid,D.J.; Woods,J.E.; Crotty,T.P.; Myers,J.L.; Arnold,P.G.; Petty,P.M.; Sellers,T.A.; Johnson,J.L.; McDonnell,S.K.; Frost,M.H.; Jenkins,R.B. (N Eng J Med, 1999)