CAPITAL HEALTH SYSTEM, INC., THE COMMUNITY HOSPITAL GROUP, INC. (T/A JFK MEDICAL CENTER), ST. LUKES WARREN HOSPITAL, INC., TRINITAS REGIONAL MEDICAL CENTER, PLAINTIFFS, AND CENTRASTATE MEDICAL CENTER, INC., HOLY NAME MEDICAL CENTER, INC., AND THE VALLEY HOSPITAL, INC., PLAINTIFFS-MOVANTS, v. HORIZON HEALTHCARE SERVICES, INC., DEFENDANT-RESPONDENT; SAINT PETERS UNIVERSITY HOSPITAL, PLAINTIFF, v. HORIZON HEALTHCARE SERVICES, INC., DEFENDANT