[1] Ctr Mol Immunol, Clin Res, Havana, Cuba
[2] Celestino Hernandez Robau Hosp, Villa Clara, Cuba
[3] Hermanos Ameijeiras Hosp, Havana, Cuba
[4] III Congreso Hosp, Pinar Del Rio, Cuba
[5] Juan Bruno Zayas Hosp, Santiago De Cuba, Cuba
[6] Jose Ramon Lopez Tabranes Hosp, Matanzas, Cuba
[7] Joaquin Albarran Hosp, Havana, Cuba
[8] Natl Coordinating Ctr Clin Trials, Havana, Cuba
[9] Luis A Turcius Lima Policlin Area, Havana, Cuba
[10] Mario Munoz Policlin Area, Havana, Cuba
[11] Carlos Manuel Portuondo Policlin Area, Havana, Cuba
[12] Ramon Gonzalez Coro Policlin Area, Havana, Cuba
[13] Antonio Luaces Iraola Hosp, Ciego De Avila, Cuba
[14] Santa Clara Policlin Area, Villa Clara, Cuba
[15] Jose R Leon Acosta Policlin Area, Villa Clara, Cuba
[16] Antonio Guiteras Policlin Area, Havana, Cuba
[17] Marcio Manduley Policlin Area, Havana, Cuba
[18] Ctr Mol Immunol, Clin Immunol, Havana, Cuba