American Journal of Respiratory and Critical Care Medicine · 2012 · 1.2K citations · 35 references
Comorbidities are frequent in COPD and 12 of them negatively influence survival. A simple disease-specific comorbidities index (COTE) helps assess mortality risk in patients with COPD.
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Paul A. Harris, Robert Taylor, Robert J. Thielke et al. · Journal of Biomedical Informatics · 2008 · 48.8K citations · Full text