Full text available from ABI/INFORM Global: 01/01/2004 to 07/31/2004

Full text available from ABI/INFORM Trade & Industry: 01/01/2005 to 10/31/2007
Full text available from Healthcare Administration Database: 01/01/2005 to 10/31/2007

Full text available from ABI/INFORM Global: 07/01/1998 to 07/31/1998