Health care fraud and abuse : hearing before the Subcommittee on Human Resources and Intergovernmental Relations of the Committee on Government Reform and Oversight, House of Representatives, One Hundred Fourth Congress, first session, on H.R. 1850 to improve federal enforcement against health care fraud and abuse and H.R. 2326 to improve federal efforts to combat fraud and abuse against health care programs, and for other purposes, September 28, 1995.