1. Department of Neurological Sciences University of Nebraska Medical Center Omaha Nebraska USA
2. Faculty of Medicine Al‐Azhar University Damietta Egypt
3. Department of Neurology SUNY Downstate Health Sciences University Brooklyn New York USA
4. Department of Neurology Yale University New Haven Connecticut USA
5. Center for Neuroepidemiology and Clinical Neurologic Research New Haven Connecticut USA
6. Department of Neurology Connecticut Veterans Affairs Healthcare System West Haven Connecticut USA