1. ACER UK
2. American College of Physicians.
3. American Medical Association.
4. BMJ Publishing Group Ltd
5. CSIRO Publishing
6. Elsevier B.V.
7. Encyclopaedia Britannica Holding S.A.
8. F.A. Davis Company
9. Frontiers Media S.A.
10. Gavin Publishers PVT.
11. Grey House Publishing
12. Hachette UK Group
13. Informa UK Limited
14. Jaypee Brothers Medica Publishers Pvt Ltd.
15. John Wiley & Sons Inc.
16. Juniper Publishers Inc.
17. Kaplan Inc.
18. Massachusetts Medical Society
19. McGraw Hill LLC.
20. Molecular Diversity Preservation International
21. SAGE Publications Ltd.
22. Springer-Verlag GmbH,
23. The Journal of Medical Internet Research
24. The Royal Society of Medicine
25. Thieme Medical Publishers Inc.
26. Thomson Reuters Corporation
27. UnitedHealth Group Inc.
28. WebMD LLC.
29. Wolters Kluwer N.V.