[1] Univ Texas MD Anderson Canc Ctr, Dept Lymphoma & Myeloma, Div Canc Med, Houston, TX 77030 USA
[2] Inst Nacl Enfermedades Neoplas, Dept Oncol Med, Lima, Peru
[3] Hosp Nacl Edgardo Rebagliati Martins, Dept Oncol & Radioterapia, Lima, Peru
[4] Univ San Martin Porres, Ctr Invest Med Precis, Lima, Peru
[5] Hosp Salvador, Hematol Sect, Santiago, Chile
[6] Hosp Univ Valle, Cali, Colombia
[7] Hosp Italiano La Plata, Hematol, La Plata, Argentina
[8] Hosp Italiano Buenos Aires, Secc Hematol, Buenos Aires, DF, Argentina
[9] Inst Invest Biomed Retrovirus & SIDA INBIRS UBA C, Buenos Aires, DF, Argentina
[10] Hosp Guillermo Almenara, Lima, Peru
[11] Univ Nacl Federico Villareal, Lima, Peru
[12] Weill Cornell Med, Dept Pediat, New York, NY USA
[13] Univ Valle, Fac Salud, Cali, Colombia
[14] Hosp Municipal Emilio Ferreyra, Serv Hematol, Necochea, Buenos Aires, Argentina
[15] Hosp Privado Univ Cordoba, Cordoba, Argentina
[16] Hosp Puerto Montt, Hematol Sect, Puerto Montt, Chile
[17] Hosp Dr Sotero del Rio, Hematol Sect, Santiago, Chile
[18] Hosp Clin Montevideo, Fac Med, Catedra Hematol, Montevideo, Uruguay
[19] Univ San Francisco Quito, Hosp Solca Quito, Hosp los Valles, Quito, Ecuador
[20] Inst Oncol Nacl Dr Juan Tanca Marengo, Serv Hematol, Guayaquil, Ecuador
[21] Hosp Especialidades Materno Infantil Caja Nacl Sa, La Paz, Bolivia
[22] Inst Nacl Cancerol, Res Div, Mexico City, DF, Mexico
[23] Inst Previs Social, Dept Hematol, Asuncion, Paraguay
[24] Inst Cancerol INCAN, Liga Nacl El Canc, Ciudad De Guatemala, Guatemala
[25] Univ Cent Venezuela, Caracas, Venezuela
[26] Dana Farber Canc Inst, Bing Ctr Waldenstrom Macroglobulinemia, Boston, MA USA
[27] Univ Miami, Miller Sch Med, Sylvester Comprehens Canc Ctr, Miami, FL 33136 USA
[28] Univ Valle Mexico, Hosp Fernando Ocaranza ISSSTE, Campus Hermosillo, Hermosillo, Sonora, Mexico