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 den Brandhof WE, Bartelds AI, Koopmans MP, van Duynhoven YT.van den Brandhof WE, et al. Among authors: bartelds ai.BMC Fam Pract. 2006 Oct 2;7:56. doi: 10.1186/1471-2296-7-56.BMC Fam Pract. 2006.PMID: 17014713Free PMC article.
Meijer A, Dagnelie CF, De Jong JC, De Vries A, Bestebroer TM, Van Loon AM, Bartelds AI, Ossewaarde JM.Meijer A, et al. Among authors: bartelds ai.Eur J Epidemiol. 2000;16(12):1099-106. doi: 10.1023/a:1010912012932.Eur J Epidemiol. 2000.PMID: 11484797Free PMC article.
Hofman A, Collette HJ, Bartelds AI.Hofman A, et al. Among authors: bartelds ai.Neuroepidemiology. 1989;8(6):296-9. doi: 10.1159/000110197.Neuroepidemiology. 1989.PMID: 2586699