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.
Hedstrand H, Aberg H.Hedstrand H, et al. Among authors: aberg h.Acta Med Scand. 1976;199(4):273-80. doi: 10.1111/j.0954-6820.1976.tb06732.x.Acta Med Scand. 1976.PMID: 1266664
Lithell H, Aberg H, Selinus I, Hedstrand H.Lithell H, et al. Among authors: aberg h.Acta Med Scand. 1984;215(5):403-9.Acta Med Scand. 1984.PMID: 6741605
Hedstrand H, Aberg H.Hedstrand H, et al. Among authors: aberg h.Acta Med Scand. 1976;199(4):281-8. doi: 10.1111/j.0954-6820.1976.tb06733.x.Acta Med Scand. 1976.PMID: 1266665