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.
Louhi-Pirkanniemi K, Rautava P, Aromaa M, Ojanlatva A, Mertsola J, Helenius H, Sillanpää M.Louhi-Pirkanniemi K, et al.Scand J Prim Health Care. 2004 Mar;22(1):16-21. doi: 10.1080/02813430310003165.Scand J Prim Health Care. 2004.PMID: 15119515
Virtanen R, Aromaa M, Koskenvuo M, Sillanpää M, Pulkkinen L, Metsähonkala L, Suominen S, Rose RJ, Helenius H, Kaprio J.Virtanen R, et al.Pediatrics. 2004 Oct;114(4):981-7. doi: 10.1542/peds.2003-1103-L.Pediatrics. 2004.PMID: 15466094