TY - JOUR AU - Hartmann, L C; Schaid, D J; Woods, J E TI - Efficacy of bilateral prophylactic mastectomy in women with a family history of breast cancer JO - N Engl J Med VL - 340 PY - 1999 DO - 10.1056/NEJM199901143400201 L3 - PubMed-ID: 9887158 SP - 77 EP - 84 N1 - et al. ER -