[1] Ficmac, Med Oncol, Bogota, Colombia
[2] Inst Nacl Cancerol, Mexico City, DF, Mexico
[3] Univ El Bosque, Mol Oncol & Biol Syst Res Grp Fox G, Bogota, Colombia
[4] Clin Colsanitas, Oncol Dept, Bogota, Colombia
[5] Hosp San Juan Dios, San Jose, Costa Rica
[6] Alexander Fleming Inst, Buenos Aires, DF, Argentina
[7] Ficmac, Bogota, Colombia
[8] AC Camargo Canc Ctr, Clin Res Unit, Sao Paulo, Brazil
[9] Natl Canc Inst Peru, Lima, Peru
[10] Clin Country, Bogota, Colombia
[11] Quiron Dexeus Univ Inst, Med Oncol, Ior, Barcelona, Spain