The following press release provides insight on industry trends and behaviors impacting all players involved in clinical research as analyzed and reported by CenterWatch.

CenterWatch and HealthDay Form Alliance to Distribute Clinical Trial News, Information, and Updates

Boston, MA - September 23, 2002 - CenterWatch, a division of Thomson Healthcare (NYSE: TOC), and HealthDay, a division of ScoutNews LLC, today announced an alliance to disseminate news and information about clinical trials and the development of new medical treatments.

CenterWatch will provide daily updates on recently initiated clinical trials and on FDA drug approvals to support a new "Clinical Trials Update" feature available from the HealthDay Service to its clients, both on the Internet and in print. In addition, the CenterWatch web site will offer clinical trial-related news stories provided by HealthDay journalists. The HealthDay Service reaches about 10 million readers a month.

"We are very excited about this alliance," said Paul Molinari, Manager of Strategic Alliances at CenterWatch. "It has always been our goal to make clinical trial information accessible through as many channels as possible. We are particularly interested in collaborating with HealthDay based on their commitment to providing a high-quality and timely consumer health news service."

"This alliance also brings a tremendous advantage to government and industry sponsors of clinical research programs who are looking for more effective and broader-reaching ways to communicate with patients and health consumers," said Molinari.

"What makes CenterWatch such a good strategic partner for HealthDay is that its clinical trial information is always accurate and up-to-date," said Barry Hoffman, HealthDay's editor-in-chief. "When CenterWatch is updated daily on our newsfeed, we know our clients will be able to offer their readers and users important information that literally could make a difference in a person's life."

About CenterWatch
CenterWatch is a Boston-based information services company that focuses on the clinical trials industry. CenterWatch offers a variety of publications and services for clinical research and health professionals, patients and health consumers. In 2002, an estimated eight million patients and their advocates will view more than 42,000 clinical trial listings on the CenterWatch web site. CenterWatch is a part of The Thomson Corporation (NYSE: TOC) and a division of Thomson Healthcare, publisher of the Physician's Desk Reference®. For more information about CenterWatch and its publications and services, visit www.centerwatch.com.

About HealthDay
HealthDay is a division of ScoutNews, LLC, a privately held Norwalk, Conn.-based news and information company.

HealthDay stories appear in more than 40 newspapers worldwide each day and on television stations in four of the top 10 markets. The news service is syndicated in print by the New York Times Syndicate and is a daily health news component of Associated Press Digital.

HealthDay stories can be found daily on a number of major Internet sites, including USAToday.com, Yahoo! and iWon. Its health care clients include HealthSouth, Consumer Health Interactive and AtMedica USA Ltd.

CenterWatch clinical trial updates are scheduled to appear on the HealthDay daily newsfeed beginning September 30, 2002.

# # #