ADA (American Diabetes Association)
American Psychiatric   Publishing, Inc.
American Academy of Ophtalmology
American Cancer Society
ASCO (American Society of Clinical Oncology)
Biomed Central
Birkhauser Publishing
Cambridge University Press
Cancer Info Group
Clinical Publishing

Elsevier
Excerpta Medica
John Scott & Company
Informa Healtcare
Karger Publishers
Medunet
Nature Publishing Group
Oxford University Press
Radcliffe Publishing
Royal College of Psychiatrists
Springer
Wiley-Blackwell