1. Breast Program, Department of Gynaecology and ObstetricsFederal University of GoiásGoiânia Goiás Brazil
2. Gynaecology and Breast UnitAraújo Jorge Hospital, ACCGGoiânia Goiás Brazil
3. School of Medical SciencesSanta Casa de Misericórdia de São PauloSão Paulo SP Brazil
4. Breast Surgical Unit at San Borja ArriaránClinical HospitalSantiago Chile
5. Medical SchoolUniversity of ChileSantiago Chile