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.
Luo ZC, Wilkins R, Platt RW, Kramer MS; Fetal and Infant Health Study Group of the Canadian Perinatal Surveillance System.Luo ZC, et al. Among authors: platt rw.Paediatr Perinat Epidemiol. 2004 Jan;18(1):40-50. doi: 10.1111/j.1365-3016.2003.00529.x.Paediatr Perinat Epidemiol. 2004.PMID: 14738546