PubMed (McGill) Contains articles from medical journals. To search broadly for material on Canada, cut and paste the following into the search box along with your topic words:
(canada or “british columbia” or alberta or saskatchewan or manitoba or ontario or quebec or “new brunswick” or “nova scotia” or “prince edward island” or maritimes or newfoundland or yukon or “northwest territories” or nunavut)
You can also limit to just one or several of these depending on your focus. For example: