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.
Griffiths N, Spence K, Loughran-Fowlds A, Westrup B.Griffiths N, et al. Among authors: spence k.Early Hum Dev. 2019 Dec;139:104840. doi: 10.1016/j.earlhumdev.2019.104840. Epub 2019 Aug 21.Early Hum Dev. 2019.PMID: 31445697
Schultz M, Loughran-Fowlds A, Spence K.Schultz M, et al. Among authors: spence k.J Paediatr Child Health. 2010 Jan;46(1-2):23-8. doi: 10.1111/j.1440-1754.2009.01612.x. Epub 2009 Nov 23.J Paediatr Child Health. 2010.PMID: 19943866