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.
Nelson EL, Campbell JM, Michel GF.Nelson EL, et al. Among authors: campbell jm.Infant Behav Dev. 2013 Apr;36(2):181-8. doi: 10.1016/j.infbeh.2013.01.009. Epub 2013 Feb 28.Infant Behav Dev. 2013.PMID: 23454419Free PMC article.
Babik I, Campbell JM, Michel GF.Babik I, et al. Among authors: campbell jm.Child Dev. 2014 Jan-Feb;85(1):294-307. doi: 10.1111/cdev.12121. Epub 2013 May 2.Child Dev. 2014.PMID: 23638971
Michel GF, Babik I, Nelson EL, Campbell JM, Marcinowski EC.Michel GF, et al. Among authors: campbell jm.Dev Psychobiol. 2013 Sep;55(6):608-20. doi: 10.1002/dev.21121. Epub 2013 Jun 10.Dev Psychobiol. 2013.PMID: 23754687Free PMC article.Review.
Nelson EL, Campbell JM, Michel GF.Nelson EL, et al. Among authors: campbell jm.Dev Psychol. 2014 Mar;50(3):809-14. doi: 10.1037/a0033803. Epub 2013 Jul 15.Dev Psychol. 2014.PMID: 23855258Free PMC article.
Michel GF, Nelson EL, Babik I, Campbell JM, Marcinowski EC.Michel GF, et al. Among authors: campbell jm.Adv Child Dev Behav. 2013;45:227-60. doi: 10.1016/b978-0-12-397946-9.00009-9.Adv Child Dev Behav. 2013.PMID: 23865118Review.