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Norsk
versjon
In order to register data in Cristin, you must be an academic or administrative employee.
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Nilssen, Yngvar; Strand, Trond-Eirik; Wiik, Robert; Bakken, Inger Johanne; Yu, Xue Qin; O'Connell, Dianne L; Møller, Bjørn. Utilizing national patient-register data to control for comorbidity in prognostic studies. Clinical Epidemiology 2014 ;Volume 6. p. 395-404 KREFTREG FHI
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