EP&I


Open Access Email this article to a friend

Mortality ascertainment of participants in the National Wilms Tumor Study using the National Death Index: comparison of active and passive follow-up results

Cecilia A Cotton*, Susan Peterson, Patricia A Norkool and Norman E Breslow

Epidemiologic Perspectives & Innovations 2007, 4:5 doi:10.1186/1742-5573-4-5

Fields marked * are required


Multiple email addresses should be separated with commas or semicolons.