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.
Vento M, Asensi M, Sastre J, Lloret A, García-Sala F, Viña J.Vento M, et al.J Pediatr. 2003 Mar;142(3):240-6. doi: 10.1067/mpd.2003.91.J Pediatr. 2003.PMID: 12640369Clinical Trial.