1. Rafael A. Schmerling, Beneficiência Portugesa de São Paulo, São Paulo; Luiza E.B.P. Kassuga, National Cancer Institute, Rio de Janeiro, Brazil; Jose G. Casas, Hospital Alemán de Buenos Aires; Gabriela Cinat, University of Buenos Aires; Luis Daniel Mazzuoccolo, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina; Fabio Ernesto Grosso Ospina, Centro Nacional de Oncología de Colombia, Bogotá, Colombia; and Jorge Luis Martinez Tlahuel, National Cancer Institute, Mexico City, Mexico.