Response to correspondence on "Phenocopies in BRCA1 and BRCA2 families: evidence for modifier genes and implications for screening". Issue 8 (1st August 2007) - Smith, A; Boyd, M C; Bulman, M; Shenton, A; Lalloo, F; Evans, D G R; Moran, A; Iddenden, R; Smith, L; Woodward, E R; Maher, E R