Buhr, R. G., Jackson, N. J., Kominski, G. F., Dubinett, S. M., Ong, M. K., & Mangione, C. M. (2019). Comorbidity and thirty-day hospital readmission odds in chronic obstructive pulmonary disease: A comparison of the Charlson and Elixhauser comorbidity indices. BMC Health Serv Res.

Buhr, Russell G., Nicholas J. Jackson, Gerald F. Kominski, Steven M. Dubinett, Michael K. Ong, i Carol M. Mangione. "Comorbidity and Thirty-day Hospital Readmission Odds in Chronic Obstructive Pulmonary Disease: A Comparison of the Charlson and Elixhauser Comorbidity Indices." BMC Health Serv Res 2019.

Buhr, Russell G., et al. "Comorbidity and Thirty-day Hospital Readmission Odds in Chronic Obstructive Pulmonary Disease: A Comparison of the Charlson and Elixhauser Comorbidity Indices." BMC Health Serv Res 2019.