. . . . "Implementation of P.R.O.'s for medicare"@en . . . . "Implementation of PRO's for medicare : hearing before the Subcommittee on Health of the Committee on Finance, United States Senate, Ninety-eighth Congress, second session, February 1, 1984"@en . . . . . . . . . "Implementation of PRO's for medicare hearing before the Subcommittee on Health of the Committee on Finance, United States Senate, Ninety-eighth Congress, second session, February 1, 1984"@en . . . . . . .