Clinical Epidemiology · 2012 · 37 citations · 45 references
The overall completeness of TNM staging for bladder cancer in the DCR was low, especially with increasing age and high level of comorbidity. Thus, restricting analyses to bladder cancer patients with complete data on stage may produce substantially selected study populations. Careful considerations should thus be made on handling missing data.
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Ahmedin Jemal, Freddie Bray · CA A Cancer Journal for Clinicians · 2011 · 55K citations · Full text
The Danish Civil Registration System
Carsten Bøcker Pedersen · Scandinavian Journal of Public Health · 2011 · 4.5K citations