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External review and validation of the Swedish national inpatient register

Jonas F Ludvigsson*, Eva Andersson, Anders Ekbom, Maria Feychting, Jeong-Lim Kim, Christina Reuterwall, Mona Heurgren and Petra Otterblad Olausson

BMC Public Health 2011, 11:450  doi:10.1186/1471-2458-11-450

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