[1
]
Stanford Headache and Facial Pain Program, Department of Neurology and Neurological
Sciences, Stanford University School of Medicine, 213 Quarry Road, Palo Alto, CA 94304,
USA. Electronic address: ywoldeam@stanford.edu.
[2
]
Stanford Headache and Facial Pain Program, Department of Neurology and Neurological
Sciences, Stanford University School of Medicine, 213 Quarry Road, Palo Alto, CA 94304,
USA.