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.
Helders PJ, Cats BP, van der Net J, Debast SB.Helders PJ, et al.Child Care Health Dev. 1988 Sep-Oct;14(5):341-54. doi: 10.1111/j.1365-2214.1988.tb00586.x.Child Care Health Dev. 1988.PMID: 3228960
Helders PJ, Cats BP, Debast S.Helders PJ, et al.Child Care Health Dev. 1989 Nov-Dec;15(6):369-80. doi: 10.1111/j.1365-2214.1989.tb00629.x.Child Care Health Dev. 1989.PMID: 2620442
Nuysink J, van Haastert IC, Eijsermans MJ, Koopman-Esseboom C, Helders PJ, de Vries LS, van der Net J.Nuysink J, et al. Among authors: helders pj.Early Hum Dev. 2013 Sep;89(9):693-7. doi: 10.1016/j.earlhumdev.2013.04.016. Epub 2013 May 24.Early Hum Dev. 2013.PMID: 23712056Clinical Trial.
Nuysink J, van Haastert IC, Eijsermans MJ, Koopman-Esseboom C, van der Net J, de Vries LS, Helders PJ.Nuysink J, et al. Among authors: helders pj.Early Hum Dev. 2012 Jun;88(6):387-92. doi: 10.1016/j.earlhumdev.2011.10.001. Epub 2011 Nov 1.Early Hum Dev. 2012.PMID: 22051525
Takken T, van der Net J, Helders PJ.Takken T, et al. Among authors: helders pj.Scand J Rheumatol. 2003;32(3):174-8. doi: 10.1080/03009740310002524.Scand J Rheumatol. 2003.PMID: 12892255
van der Hoeven H, van der Net J, Helders PJ, Keessen W.van der Hoeven H, et al. Among authors: helders pj.Tijdschr Kindergeneeskd. 1991 Oct;59(5):167-72.Tijdschr Kindergeneeskd. 1991.PMID: 1957304Review.Dutch.
Nuysink J, Eijsermans MJ, van Haastert IC, Koopman-Esseboom C, Helders PJ, de Vries LS, van der Net J.Nuysink J, et al. Among authors: helders pj.J Pediatr. 2013 Sep;163(3):658-65.e1. doi: 10.1016/j.jpeds.2013.04.015. Epub 2013 May 21.J Pediatr. 2013.PMID: 23706356
van Brussel M, Takken T, Lucia A, van der Net J, Helders PJ.van Brussel M, et al. Among authors: helders pj.Leukemia. 2005 Jan;19(1):13-7. doi: 10.1038/sj.leu.2403547.Leukemia. 2005.PMID: 15526028Review.