Agency for Healthcare Research and Quality, Healthcare Cost and Utilization Project Statistical Brief: “Overview of Hospitalizations among Patients with COPD, 2008,” by Lauren M. Wier, Anne Elixhauser, Anne Pfuntner, and David H. Au (Statistical Brief No. 106, February 2011, .pdf and HTML format, 11p.).
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US Department of Health and Human Services, Substance Abuse and Mental Health Services Administration Report: “Emergency Department Visits Involving Adverse Reactions to Medications among Older Adults,” (February 2011, HTML and .pdf format, 4p.).
