The Express Scripts/Medco merger : cost savings for consumers or more profits for the middlemen? : hearing before the Subcommittee on Antitrust, Competition Policy and Consumer Rights of the Committee on the Judiciary, United States Senate, One Hundred Twelfth Congress, first session, December 6, 2011.
Imprint
Washington : U.S. G.P.O. : For sale by the Supt. of Docs., U.S. G.P.O., 2012.