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Here’s how you know
Official websites use .gov A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
How do I cite HHS.gov, SurgeonGeneral.gov, HealthCare.gov or Flu.gov Web pages?
You may cite content from an HHS website by using the date, page title, and the URL.