AU - Feng Z, Lepore M, Clark MA, et al TI - Geographic concentration and correlates of nursing home closures: 1999-2008 PT - JOUR DP - 2011 TA - Archives of Internal Medicine pages = {806-813}, VI - 171 IP - 9 AID - 10.1001/archinternmed.2010.492 [doi] 4100 - http://dx.doi.org/10.1001/archinternmed.2010.492 SO - Archives of Internal Medicine May 9, 2011 171(9):806