http://www.sciencekomm.at/

The site comprises just under 4000 links to bioscience and medical journal homepages, links to publishers and other links to a variety of online resources smoothing the research communication process, including writing advice, newsgroups, subject directories, online dictionaries, abstract databases, journal monitors and more.

http://www.cardiologyonline.com/

The International Academy of Cardiology is dedicated to the advancement of global research in cardiovascular medicine through the support of scientific meetings. The site serves as a Cardiology Directory and Guide. It links to numerous organizations, institutions, congresses, journals and books in cardiology.

http://gateway.nlm.nih.gov/gw/Cmd

The National Library of Medicine...The NLM Gateway allows users to search in multiple retrieval systems at the U.S. National Library of Medicine (NLM). The current Gateway searches MEDLINE/PubMed, TOXLINE Special, LOCATORplus, MedlinePlus, ClinicalTrials.gov, DIRLINE, Meeting Abstracts, HSRProj, OMIM, and HSDB.