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.
Webster GM, Teschke K, Janssen PA.Webster GM, et al. Among authors: janssen pa.Matern Child Health J. 2012 Feb;16(2):430-8. doi: 10.1007/s10995-010-0739-8.Matern Child Health J. 2012.PMID: 21210200
Wiebe ER, Janssen PA, Henderson A, Fung I.Wiebe ER, et al. Among authors: janssen pa.Contraception. 2004 Jun;69(6):493-6. doi: 10.1016/j.contraception.2004.01.006.Contraception. 2004.PMID: 15157795