UNITED STATES of America ex rel. John C. KARVELAS, Plaintiffs, Appellant, v. MELROSE-WAKEFIELD HOSPITAL; Melrose-Wakefield Healthcare Corporation; Hallmark Health System, Inc., Defendants, Appellees. No. 03-1901.United States Court of Appeals, First Circuit.Heard November 3, 2003. Decided February 23, 2004. Appeal from the United States District Court for the District of Massachusetts, Douglas P. Woodlock, J. Page […]