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.
Visser WH, Klein KB, Cox RC, Jones D, Ferrari MD.Visser WH, et al. Among authors: ferrari md.Neurology. 1996 Feb;46(2):522-6. doi: 10.1212/wnl.46.2.522.Neurology. 1996.PMID: 8614525Clinical Trial.
Visser WH, de Vriend RH, Jaspers MW, Ferrari MD.Visser WH, et al. Among authors: ferrari md.Neurology. 1996 Jul;47(1):46-51. doi: 10.1212/wnl.47.1.46.Neurology. 1996.PMID: 8710123
Visser WH, Jaspers NM, de Vriend RH, Ferrari MD.Visser WH, et al. Among authors: ferrari md.Cephalalgia. 1996 Jun;16(4):264-9. doi: 10.1046/j.1468-2982.1996.1604264.x.Cephalalgia. 1996.PMID: 8792039
Visser WH, de Vriend RH, Jaspers NH, Ferrari MD.Visser WH, et al. Among authors: ferrari md.Headache. 1996 Sep;36(8):471-5. doi: 10.1046/j.1526-4610.1996.3608471.x.Headache. 1996.PMID: 8824001
Visser WH, Jaspers NM, de Vriend RH, Ferrari MD.Visser WH, et al. Among authors: ferrari md.Cephalalgia. 1996 Dec;16(8):554-9. doi: 10.1046/j.1468-2982.1996.1608554.x.Cephalalgia. 1996.PMID: 8980858