@article{mangone_bobrovnitchaia_salaorni_manuli_nagai_2012,  title={PIK3CA exon 20 mutations are associated with poor prognosis in breast cancer patients},  volume={67},  ISSN={1807-5932},  url={https://doi.org/10.6061/clinics/2012(11)11},  DOI={10.6061/clinics/2012(11)11},  number={11},  journal={Clinics},  publisher={Faculdade de Medicina / USP},  author={Mangone, Flavia R. and Bobrovnitchaia, Irina G. and Salaorni, Sibeli and Manuli, Erika and Nagai, Maria A.},  year={2012},  month={Nov},  pages={1285–1290} }