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.
Spijkerboer AW, Utens EM, De Koning WB, Bogers AJ, Helbing WA, Verhulst FC.Spijkerboer AW, et al. Among authors: helbing wa.Qual Life Res. 2006 May;15(4):663-73. doi: 10.1007/s11136-005-3692-z.Qual Life Res. 2006.PMID: 16688499
de Koning WB, van Osch-Gevers M, Ten Harkel AD, van Domburg RT, Spijkerboer AW, Utens EM, Bogers AJ, Helbing WA.de Koning WB, et al. Among authors: helbing wa.Eur J Pediatr. 2008 Sep;167(9):995-1004. doi: 10.1007/s00431-007-0626-5. Epub 2007 Nov 7.Eur J Pediatr. 2008.PMID: 17987315
Robbers-Visser D, Luijnenburg SE, van den Berg J, Moelker A, Helbing WA.Robbers-Visser D, et al. Among authors: helbing wa.Cardiol Young. 2009 Dec;19(6):552-62. doi: 10.1017/S1047951109991818. Epub 2009 Oct 23.Cardiol Young. 2009.PMID: 19849877Review.