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Mesothelioma is an extremely rare cancer in children. Risk factors for this disease in children are largely unknown. What kind of study design, using children,

Mesothelioma is an extremely rare cancer in children. Risk factors for this disease in children are largely unknown. What kind of study design, using children, would be most appropriate for investigating the etiology and risk factors of childhood mesothelioma?"

cross sectional

case control study

prospective cohort study

retrospective study

ecological study

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