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.
van Aalderen WM, Mannes GP, van Bommel G, Voorthuis I, Bosma E, Heymans HS.van Aalderen WM, et al. Among authors: heymans hs.Ned Tijdschr Geneeskd. 1993 Nov 27;137(48):2482-6.Ned Tijdschr Geneeskd. 1993.PMID: 8272123Dutch.
Olsder NK, van Elburg RM, van Rijn M, van Voorst Vader PC, de Monchy JG, Heymans HS.Olsder NK, et al. Among authors: heymans hs.Ned Tijdschr Geneeskd. 1995 Aug 19;139(33):1690-4.Ned Tijdschr Geneeskd. 1995.PMID: 7566232Dutch.