1. ABRAXAS MEDICAL SOLUTION
2. ALLSCRIPTS
3. ECLINICALWORKS
4. EPIC SYSTEMS CORPORATION
5. PRACTICE FUSION
6. ATHENAHEALTH
7. GE HEALTHCARE
8. CUREMD
9. APRIMA MEDICAL SOFTWARE
10. CERNER CORPORATION
11. COMPUGROUP
12. COMPUTERS PROGRAMS AND SYSTEM INC
13. GREEENWAY MEDICAL TECHNOLOGIES
14. MCKESSON
15. MEDITAB SOFTWARE
INC
16. NEXTGEN HEALTHCARE INFORMATION SYSTEM INC
17. OPTUM (PICIS INC)
18. PLATINUM SYSTEM SPECIALISTIS
INC
19. T-SYSTEM INC
20. VITERA HEALTHCARE SOLUTIONS