A
American Dietetic Association
American Dental Association Online
American Heart Association
American Lung Association
American Medical Association
Association of American Medical Colleges

B
Brigham and Women's Hospital Radiology Department

C
Canadian Society of Allergy & Clinical Immunology
Canadian Anaesthetists' Society
Canadian Cardiovascular Society
Canadian Critical Care Society
Canadian Association of Emergency Physicians
Canadian Association of Gastroenterology
The Canadian Association of General Surgeons
Canadian Society of Internal Medicine
Canadian Medical Association
Canadian Neurological Society
Canadian Paediatric Society
Canadian Neurosurgical Society
Canadian Ophthalmological Society
Canadian Pharmacists Association
Canadian Society of Hospital Pharmacists
Canadian Association of Physical Medicine & Rehabilitation
Canadian Psychiatric Association
Canadian Association of Radiologists
Canadian Society of Thoracic Surgeons
Canadian Urological Association
Centers for Disease Control and Prevention

D
Doctor's Guide to Asthma
Doctor's Guide to the Internet
The Doctor's Guide to the Internet

G
Genetics

H
Human Anatomy On-line

I
Internet Grateful Med

J
Jonathan Tward's Multimedia Medical Reference Library

M
MRI Image Map
Mayo Health O@sis
MedicineNet
Meditel Information Service
Medscape
Mental Health Info Link
Mental Health Net
The Merck Manual

P
The Pediatric Rheumatology Home Page
PEDINFO: An Index of the Pediatric Internet

R
Reuters Health Information
RCPS

S
Society of Obstetricians & Gynecologists of Canada
Stadtlanders Pharmacy

W
WebPath: The Internet Pathology Laboratory for Medical Education