Identification of mutations in exon 20 of the PIK3CA gene in patients with breast cancer of Southest Bahia - Oliveira, J. S.; Faria, C. A.; Silva, V. B.; Silva Júnior, Wilson Araújo da; Macedo, C. L.; Sousa, S. M. B.; Lima, P. S. P. (Congresso Brasileiro de Genética, 2013)