British Medical Association - Library

Combined Health Information Database (CHID Online)

Directory of Electronic Health Sciences Journals 

Health Promotion Index - United Kingdom

Health Promotion Researchers Internet Network

Information Waystations & Staging Posts

International Bibliographic Information on Dietary Supplements - Database

International Network for the Availability of Scientific Publications

ISI - Thompson Scientific

Medline Plus

MedWeb Plus

National Center for Health Statistics - CDC, USA

National Electronic Library for Health - NHS, UK

Netting the Evidence

Oxford University Press

Public Health Library - Berkeley Library

Pub Med, National Library of Medicine

SAGE Publications

Science Direct