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.
Madden L, Shilling V, Woolfall K, Sowden E, Smyth RL, Williamson PR, Young B.Madden L, et al. Among authors: smyth rl.Child Care Health Dev. 2016 Nov;42(6):900-908. doi: 10.1111/cch.12347. Epub 2016 May 2.Child Care Health Dev. 2016.PMID: 27136194Free PMC article.
Gladstone M, Lancaster G, Umar E, Nyirenda M, Kayira E, van den Broek N, Smyth RL.Gladstone M, et al. Among authors: smyth rl.Child Care Health Dev. 2010 May;36(3):346-53. doi: 10.1111/j.1365-2214.2009.01008.x. Epub 2009 Aug 31.Child Care Health Dev. 2010.PMID: 19719769