Section to complete the data related to the clinical sites involved in the trial: site and responsible investigator for every site.
      Countries of recruitment: 
    
 
      Clinical sites: 
    
            
                    Havana, Hermanos Ameijeiras Hospital, Elia Neninger, MD. Oncologist        
              
                    Villa Clara, Celestino Hernnadez Robau Hospital, Ramon A. Carrodeguas, MD. On cologist        
              
                    Santiago de Cuba, Saturnino Lora Hospital, Soraida Acosta, MD. Internal Medicine        
              
                    Granma, Celia Sanchez Manduley Hospital, Gustavo Pichs, MD. Oncologist        
              
                    Pinar del Rio, III Congreso Hospital, Rosa M. Amador, MD. Oncologist        
              
                    Cienfuegos, Gustavo Aldereguia Hospital, Ivian Iglesias, MD. Oncologist        
              
                    Havana, National  Institute of Oncology and Radiobiology, Yoana Flores, MD. Onoclogist        
         
 
      Research ethics committees: 
    
            
                    Jose Ramon Lopez Tabrane, december 18, 2012        
              
                    Hermanos Ameijeiras, october 19, 2012        
              
                    Celestino Hernnadez Robau, january 1, 2013         
              
                    Saturnino Lora Hospital, august 31, 2012        
              
                    Celia Sanchez Manduley, october 25, 2012        
              
                    III Congreso Hospital, november 1, 2012        
              
                    Gustavo Aldereguia, december 15, 2012        
              
                    National  Institute of Oncology and Radiobiology, june 6, 2013