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.
Hertogh CM, The BA.Hertogh CM, et al.Tijdschr Gerontol Geriatr. 2008 Dec;39(6):265-72. doi: 10.1007/BF03078165.Tijdschr Gerontol Geriatr. 2008.PMID: 19227594Dutch.
Smalbrugge M, Achterberg WP, Dik MG, Hertogh CM, Frijters DH.Smalbrugge M, et al. Among authors: hertogh cm.Tijdschr Gerontol Geriatr. 2008 Oct;39(5):193-201. doi: 10.1007/BF03078153.Tijdschr Gerontol Geriatr. 2008.PMID: 18975844Dutch.