Institution: | 1.Department of Neurology, Yale University School of Medicine (SOM), PO Box 208018, New Haven, CT 06520-8018 USA ;2.Department of Neurology, Veterans Affairs Connecticut Healthcare System, West Haven, CT USA ;3.Veterans Affairs Headache Centers of Excellence: Research Hub, West Haven, CT USA ;4.Center for NeuroEpidemiologic and Clinical Neurological Research, Yale University School of Medicine, New Haven, CT USA |