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.
Skalko RG, Kwasigroch TE.Skalko RG, et al. Among authors: kwasigroch te.Biol Res Pregnancy Perinatol. 1983;4(1):26-35.Biol Res Pregnancy Perinatol. 1983.PMID: 6850029