| 
      
        |                 Variables | Frequency | Percent |  
        | Gender |   |   |  
        | Male | 20 | 66.7 |  
        | Female | 10 | 33.3 |  
        | Type of tumor |   |   |  
        | AML | 4 | 13.3 |  
        | ALL | 9 | 30.0 |  
        | Ca.breast | 2 | 6.7 |  
        | Burkitt's lymphoma | 2 | 6.7 |  
        | Colorectal carcinoma | 1 | 3.3 |  
        | HL | 3 | 10.0 |  
        | NHL | 4 | 13.3 |  
        | Wilm's tumor | 1 | 3.3 |  
        | Neuroblastoma | 1 | 3.3 |  
        | PNET | 2 | 6.7 |  
        | Osteosarcoma | 1 | 3.3 |  
        | Drug groups |   |   |  
        | Adriamycine ,Bleomycin, Decarbazine, Vinblastin | 1 | 3.3 |  
        | Etoposide, Ifosfamide, Mesna | 4 | 13.3 |  
        | Daunorubicin, Cytosar | 4 | 13.3 |  
        | Methotrexate, Vincristion, Adriamycine | 1 | 3.3 |  
        | Daunorubicin, Methotrexate, Cychlophosphamide, Cytosar | 2 | 6.7 |  
        | Methotrexate, Cytosar, L-asparginase | 1 | 3.3 |  
        | Etoposide, Ifosfamide, Decarbazine, Doxorubicine | 1 | 3.3 |  
        | Daunorubicin, Cytosar, Vincristin, L-asparginase | 4 | 13.3 |  
        | Bleomycin, Decarbazine, Vinblastin | 1 | 3.3 |  
        | Vincristin ,Cychlophosphamide, Doxorubicine | 2 | 6.7 |  
        | Adriamycine ,Bleomycin, Decarbazine, Vincristin | 1 | 3.3 |  
        | Daunorubicin, Vincristin, L-asparginase, Pridinisolone | 2 | 6.7 |  
        | Methotrexate ,Cychlophosphamide, 5-fluruouracil | 2 | 6.7 |  
        | 5-fluruouracil, Oxaloplatin, Avastin | 1 | 3.3 |  
        | Methotrexate, Vincristin, Cychlophosphamide, Adriamycine | 1 | 3.3 |  
        | Cytosar, Vincristin, L-asparginase, Cychlophosphamide | 1 | 3.3 |  
        | Vincristin, L-asparginase, Cychlophosphamide, Predinisolone | 1 | 3.3 |  
        | Total | 30 | 100 |  |