4Therapy.com

The Lustgarten Foundation

ABCnews.com

MDedge, Inc.

Acurian

Medbroadcast Corporation

Alcius

MedExplorer.com

Accordant.com

Medical College of Georgia

AmericasDoctor.com

Mediconsult.com

Annie Appleseed Project

Medscape, Inc.

Bipolar World

Merck & Co.

The BlackHealth Network

MerckMedicus.com

Breastcaresite.com

Micromedex

CancerOption.com

MyDrugRep.com

CancerSource.com

MySkinMD.com

CBSHealthwatch.com

National Ataxia Foundation

Cancer Treatment Research Foundation

National Consortium of Breast Centers, Inc.

Christopher Reeve Paralysis Foundation

National Kidney Foundation

Colorectal Cancer Network

National Library of Medicine MEDLINE Plus

Cure for Lymphoma Foundation

National Melanoma Foundation

Current Controlled Trials

National Network of Libraries of Medicine

Digestive Diseases Foundation

NCERx

DrKoop.com

New York State Library

DrugDev123.com

NIH "Healthy Websites"

Discovery Alliance International, Inc.

NursingHands.com

e-Research Technology

Omnicomm Systems, Inc.

Elaine Mackie Charitable Trust

Oncology.com

The Endocrine Society

OncologyChannel.com

Excite Health

PDR.net

Gale Group

Questium, Inc.

GayHealth.com

Rheumatology Research International

Geltex

Rhyss Publishing

GlaxoSmithKline

RXSheets.com

HealthDirectory.com

San Francisco AIDS Foundation

The Healthexchange

The Sarcoma Foundation of America

The Health Library at Stanford University

Sleep Foundation

TheHealthPages.com

Support for People with Oral, Head & Neck Cancer

Health Research Association - USC

Susan Love, MD

Humana

University of Nebraska Medical Center

Inceutica.com

University of Wisconsin - Madison

International Myeloma Foundation

Velos, Inc.

Intestinal Disease Foundation

Veritas Medicine

Invida.com

VitalBio.com

iVillage/allHealth

Walter Payton Cancer Fund

Knowledge Express

WebMD.com

Lifeclinic

Yahoo.com

Living Beyond Breast Cancer