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.
Jónsson A, Hallgrímsson J.Jónsson A, et al. Among authors: hallgrimsson j.Age Ageing. 1983 May;12(2):111-7. doi: 10.1093/ageing/12.2.111.Age Ageing. 1983.PMID: 6408909
Jónsson A, Agnarsson BA, Hallgrímsson J.Jónsson A, et al. Among authors: hallgrimsson j.Age Ageing. 1985 Mar;14(2):109-12. doi: 10.1093/ageing/14.2.109.Age Ageing. 1985.PMID: 4003181
Gudlaugsson E, Magnússon B, Hallgrímsson J.Gudlaugsson E, et al. Among authors: hallgrimsson j.APMIS. 1990 Feb;98(2):173-8. doi: 10.1111/j.1699-0463.1990.tb01018.x.APMIS. 1990.PMID: 2302353