Reference Sites and On-line Texts http://www.nlm.nih.gov/
National Library of Medicine offers databases and electronic information sources including PubMed and Internet Grateful Med. http://www.medmatrix.org/reg/login.asp?/index.asp
Developed for health care practitioners, MedMatrix assigns rank to internet resources based on their clinical relevance. http://www.gretmar.com/webdoctor/home.html
Webdoctor-a comprehensive index of internet medical resources http://text.nlm.nih.gov/ftrs/pick?ftrsK=46665&cd=1&t=936822855&collect=ppip&dbName=ppipc
The Clinician's Handbook of Preventative Services- full on-line text http://www.vh.org/Providers/ClinRef/FPHandbook/FPContents.html
Family Practice Handbook- full on-line text | 
