Ladha, Karim S, Kevin Zhao, Sadeq A Quraishi, Tobias Kurth, Matthias Eikermann, Haytham M A Kaafarani, Eric N Klein, Raghu Seethala, and Jarone Lee. 2015. “The Deyo-Charlson and Elixhauser-van Walraven Comorbidity Indices as predictors of mortality in critically ill patients.” BMJ Open 5 (9): e008990. doi:10.1136/bmjopen-2015-008990. http://dx.doi.org/10.1136/bmjopen-2015-008990.