Methotrexate in Pediatric Osteosarcoma: Response and Toxicity in Relation to Genetic Polymorphisms and Dihydrofolate Reductase and Reduced Folate Carrier 1 Expression
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This work was partially supported by a grant from the Department of Education and Culture of the Gobierno de Navarra. The authors declare no conflicts of interest.
PII: S0022-3476(08)01041-X
doi:10.1016/j.jpeds.2008.11.030
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