Remember: you can search the Academic Search Complete database and look for these journals (aka: source) in your results, or you can go to Journals & eBooks on the library homepage and click on Find Journals. Once the journal is displayed, you can "search within" it.
American Journal of Public Health
JAMA (Journal of the American Medical Association)
Journal of Health & Social Behavior
Medical Care Research and Review
NEJM (New England Journal of Medicine)
Preventing Chronic Disease (open access)