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.
Hubig LT, Smith T, Williams E, Powell L, Johnston K, Harris L, L'Italien G, Coric V, Lloyd AJ, Lo SH.Hubig LT, et al. Among authors: smith t.J Headache Pain. 2022 Aug 8;23(1):97. doi: 10.1186/s10194-022-01467-z.J Headache Pain. 2022.PMID: 35941572Free PMC article.
Loder E, Silberstein SD, Abu-Shakra S, Mueller L, Smith T.Loder E, et al. Among authors: smith t.Headache. 2004 Feb;44(2):120-30. doi: 10.1111/j.1526-4610.2004.04027.x.Headache. 2004.PMID: 14756849Clinical Trial.
Smith TR, Sunshine A, Stark SR, Littlefield DE, Spruill SE, Alexander WJ.Smith TR, et al.Headache. 2005 Sep;45(8):983-91. doi: 10.1111/j.1526-4610.2005.05178.x.Headache. 2005.PMID: 16109111Clinical Trial.