Santa Casa Medical School, Sao Paulo, Brazil. Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico. Hospital General de Mexico, Mexico City, Mexico. Fundacao Faculdade Regional de Medicina Sao Jose do Rio Preto, Sao Jose do Rio Preto, Brazil. Centro Medico Nacional La Raza, Mexico City, Mexico. FUNDALEU, Buenos Aires, Argentina. Hospital Universitário Walter Cantídio, Fortaleza, Brazil. Instituto Nacional del Cancer, Santiago, Chile. Instituto de Oncología Ángel H. Roffo, Buenos Aires, Argentina. Janssen-Cilag Farmacêutica Ltda., Sao Paulo, Brazil. Janssen-Cilag Farmacêutica Ltda., Buenos Aires, Argentina. Janssen Scientific Affairs, Titusville, NJ, USA.