1. Department of Radiation Oncology Hospital Sírio‐Libanês São Paulo Brazil
2. Department of Radiology and Oncology of University of São Paulo, Division of Radiation Oncology Instituto do Câncer do Estado de São Paulo (ICESP/FMUSP) São Paulo Brazil
3. Department of Breast Surgery Hospital Sírio‐Libanês São Paulo Brazil
4. Division of Radiation Oncology McGill University Health Centre Montréal Quebec Canada
5. Department of Radiation Oncology University of Texas MD Anderson Cancer Center Houston Texas
6. Radiation Medicine Program, Princess Margaret Cancer Centre University Health Network Toronto Ontario Canada
7. Department of Radiation Oncology Institut Curie Paris France