[1] Ctr Mol Immunol, Clin Res, Havana, Cuba
[2] Hosp Clin Quirurg Hermanos Ameijeiras, Clin Oncol, Havana, Cuba
[3] Jose R Lopez Tabranes Hosp, Clin Oncol, Matanzas, Cuba
[4] Miguel Enriquez Hosp, Clin Oncol, Havana, Cuba
[5] III Congreso Hosp, Clin Oncol, Pinar Del Rio, Cuba
[6] Saturnino Lora Hosp, Clin Oncol, Santiago De Cuba, Cuba
[7] Comandante Pinares Hosp, Clin Oncol, Artemisa, Cuba
[8] Camilo Cienfuegos Hosp, Clin Oncol, Sancti Spiritus, Cuba
[9] Vladimir I Lenin Hosp, Clin Oncol, Holguin, Cuba
[10] Celestino Hernandez Hosp, Clin Oncol, Villa Clara, Cuba
[11] Antonio Luaces Iraola Hosp, Clin Oncol, Ciego De Avila, Cuba
[12] Gustavo Aldereguia Lima Hosp, Clin Oncol, Cienfuegos, Cuba
[13] Celia Sanchez Manduley Hosp, Clin Oncol, Granma, Cuba
[14] Juan Bruno Zayas Hosp, Clin Oncol, Santiago De Cuba, Cuba
[15] Natl Inst Oncol & Radiobiol, Clin Oncol, Havana, Cuba
[16] Ctr Mol Immunol, Clin Res, Havana, Cuba
[17] Natl Coordinating Ctr Clin Trials, Clin Res, Havana, Cuba