Wednesday, December 3, 2008 - 9:40PM EST

United States

Pennsylvania

Name of AuthorInstitutional Affiliation
Balasubramaniam RDepartment of Oral Medicine, University of Pennsylvania, School of Dental Medicine, Philadelphia, PA 19104, USA. rbalasub@dental.upenn.edu
Klasser GDDepartment of Oral Medicine, University of Pennsylvania, School of Dental Medicine, Philadelphia, PA 19104, USA.
Levin MDrexel University College of Medicine-Neurology, Philadelphia, PA, USA.
Peterlin BLDrexel University College of Medicine-Neurology, Philadelphia, PA, USA.
Silberstein, S DJefferson Headache Center, Department of Neurology, Thomas Jefferson University, Philadelphia, PA 19107, USA.
Siow, H CJefferson Headache Center, Department of Neurology Thomas Jefferson University Hospital, Philadelphia, Pennsylvania 19107, USA. charles.siow@mail.tju.edu