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Of publications in the Internet but credible
Official govermental and federal agencies like WHO (World Health Organizations)
CDC (Center for Disease Prevention and Control)
AHA (American Heart Association)
ADA (American Diabetes Association)
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I did not understand the question phrasing...
what do you mean by "where do one find ?"
Google search can provide a number of choices of the websites on different topics but to select one with accurate information needs analysis of the content.
A good Boolean search can provide some useful answers.
https://en.wikipedia.org/wiki/Main_Page