1) COMMUNITY HEALTH SYSTEMS PROFESSIONAL SERVICES CORPORATION

2) COOPERATIVE COUNCIL FOR OKLAHOMA SCHOOL ADMINISTRATION, INC.

3) OKLAHOMA ASSOCIATION OF CAREER & TECHNOLOGY EDUCATION

4) OKLAHOMA NORTHWEST PANHANDLE ADMINISTRATORS ASSOCIATION d/b/a OKLAHOMA NORTHWEST PANHANDLE ADMINISTRATORS ASSOCIATION

5) OKLAHOMA STATE RADIOLOGICAL SOCIETY, INC.

6) ORGANIZATION OF RURAL OKLAHOMA SCHOOLS d/b/a OROS

7) TEAMHEALTH, INC.