1. National hospital discharge survey: 2007 summary;Hall;Natl Health Stat Report,2010
2. Agency for Healthcare Quality and Research Hospital survey on patient safety culture: 2007 comparative database report 2007 http://www.ahrq.gov/qual/hospsurveydb/
3. The incidence and severity of adverse events affecting patients after discharge from the hospital;Forster;Ann Intern Med,2003
4. The Medicare Payment Advisory Commission Report to the congress: Promoting greater efficiency in Medicare 2007 http://www.medpac.gov/documents/Jun07_EntireReport.pdf