1. Departments of Neurology, Epidemiology and Population Health and Psychiatry and Behavioral Sciences Montefiore Headache Center, Albert Einstein College of Medicine Bronx New York USA
2. Department of Veterans Affairs Veterans Health Administration Headache Centers of Excellence (HCoE) Program Orange Connecticut USA
3. Department of Neurology Yale School of Medicine New Haven Connecticut USA
4. Ferkauf School of Psychology Yeshiva University Bronx New York USA
5. Department of Neurology Albert Einstein College of Medicine Bronx New York USA
6. VA Headache Centers of Excellence New Haven Connecticut USA