Source mdc mdcdesc link : DRG Format Progam . Accessed 16 Aug 2014.
mdc_mdcdesc2012 data set up by Jean Roth , jroth@nber.org , 16 Aug 2014
Source drg drgdesc link : DRG Format Progam . Accessed 16 Aug 2014.
drg_drgdesc2012 data set up by Jean Roth , jroth@nber.org , 16 Aug 2014
drg_mdc2012 data set up by Jean Roth , jroth@nber.org , 16 Aug 2014
Source drg mdc link : DRG Format Progam . Accessed 16 Aug 2014.
http://www.hcup-us.ahrq.gov/db/state/siddbdocumentation.jsp