[1] AC Camargo Canc Ctr, Sao Paulo, Brazil
[2] Inst Nacl Cancerol, Mexico City, Mexico
[3] Hosp Base Sao Jose do Rio Preto, Sao Jose Do Rio Preto, Brazil
[4] Fdn Clin & Appl Canc Res FICMAC, Bogota, Colombia
[5] Luis Carlos Sarmiento Angulo Canc Treatment & Res, Bogota, Colombia