“Percentage of Hospitalizations, by Expected Payment Source and Hospital Locality — National Hospital Discharge Survey, United States, 2009″ (US Centers for Disease Control, vOL. 61, No. 10, Mar. 17, 2012, HTML and .pdf format, p. 179).
www.cdc.gov/mmwr/preview/mmwrhtml/mm6110a8.htm?s_cid=mm6110a8_w
