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"Our model suggests that nearly one in two children with cancer are never diagnosed and may die untreated," says study author Zachary Ward from the Harvard T.H. Chan School of Public Health, USA. "Accurate estimates of childhood cancer incidence are critical for policy makers to help them set healthcare priorities and to plan for effective diagnosis and treatment of all children with cancer. While under-diagnosis has been acknowledged as a problem, this model provides specific estimates that have been lacking." - www.sciencedaily.com