1. 1 Department of Clinical Oncology, ICESP – Instituto do Câncer do Estado de São Paulo, São Paulo, SP, Brazil
2. 2 Department of Clinical Oncology, Hospital Sirio-Libanês, São Paulo, SP, Brazil
3. 3 Department of Clinical Oncology, Oncosite – Centro de Pesquisa Clínica em Oncologia, Ijuí, RS, Brazil