ERBB2 and bilateral breast cancer: Triple negative breast cancer,3 (n=374);Node-positive breast cancer,2 (n=318);Node-negative breast cancer,2 (n=295);Locally advanced breast cancer, 2 (n=131);Inflammatory breast cancer, 1 (n=44);HER-2 negative breast cancer, 2 (n=218);Bilateral breast cancer, 1 (n=33);General breast cancer,5 (n=2712)