An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
Vargas-Díez E, García-Díez A, Marín A, Fernández-Herrera J.Vargas-Díez E, et al.Clin Dermatol. 2005 May-Jun;23(3):285-300. doi: 10.1016/j.clindermatol.2004.06.005.Clin Dermatol. 2005.PMID: 15896544Review.