1. Department of Medical Oncology, Centro de Oncologia Hospital Sírio Libanês, São Paulo, Brazil
2. Department of Medical Oncology, Hospital Beneficência Portuguesa, São Paulo, Brazil
3. Center for Personalized Cancer Therapy and Division of Hematology and Oncology, University of California, San Diego, CA, USA
4. Biostatistics Division, Department of Preventive Medicine, Keck School of Medicine of the University of Southern California, Los Angeles, CA, USA