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.
Amon E, Lewis SV, Sibai BM, Villar MA, Arheart KL.Amon E, et al. Among authors: sibai bm.Am J Obstet Gynecol. 1988 Sep;159(3):539-43. doi: 10.1016/s0002-9378(88)80002-4.Am J Obstet Gynecol. 1988.PMID: 3421250Clinical Trial.
Spinnato JA, Sibai BM, Anderson GD.Spinnato JA, et al. Among authors: sibai bm.South Med J. 1986 May;79(5):559-62. doi: 10.1097/00007611-198605000-00010.South Med J. 1986.PMID: 3704721