276 F.3d 1032 (8th Cir. 2002) MINNESOTA ASSOCIATION OF NURSE ANESTHETISTS, UNITED STATES OF AMERICA, EX REL., PLAINTIFF – APPELLANT,v.ALLINA HEALTH SYSTEM CORP.; UNITY HOSPITAL; MERCY HOSPITAL; MARK SPERRY, M.D.; GARY BAGGENSTOSS, M.D.; JOHN MURPHY; DAVID CUMMING, M.D.; JOHN RYDBERG, M.D.; MIDWEST ANESTHESIOLOGISTS, P.A.; METROPOLITAN ANESTHESIA NETWORK; HEALTH BILLING SYSTEMS, INC.; ALLEN TANK; THELMA M. […]