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. 2018 May 22;8:156. doi: 10.3389/fonc.2018.00156

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Copyright © 2018 Debiasi, Polanczyk, Ziegelmann, Barrios, Cao, Dignam, Goss, Bychkovsky, Finkelstein, Guindalini, Filho, Albuquerque, Reinert, de Azambuja and Olopade.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Adapted PRISMA flow diagram. * Indexed literature research: EMBASE, Central (COCHRANE) and PubMed. ** non-indexed literature: American Society od Cinical Oncology (ASCO), San Antonio Breast Cancer Symposium (SABCS). European Society for Medical Oncology (ESMO), St. Gallen International Breast Cancer Conference.