In El Salvador, Dr. Rodriguez-Galindo and his colleagues have managed to upend that calculus by forging a partnership with the nation’s government and its nonprofit sector that has enabled them to pass on the tools of their trade. As a result, El Salvador has had unusual success for a low-income nation: The survival rate for childhood cancers there has increased dramatically, from 5 percent in 1993 to 48 percent today...This week, St. Jude announced a five-year, $15 million partnership with the World Health Organization, aimed at expanding on that success. 

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