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.
Kowalska M, Kowalska H, Zawadzka-Głos L, Debska M, Szerszeń E, Chmielik M, Wasik M.Kowalska M, et al.Int J Pediatr Otorhinolaryngol. 2003 Apr;67(4):365-71. doi: 10.1016/s0165-5876(02)00402-0.Int J Pediatr Otorhinolaryngol. 2003.PMID: 12663108