1. Department of Neurology, University of Michigan, Ann Arbor, Michigan, USA
2. Department of Biomedical Sciences, School of Medicine and Health Sciences, University of North Dakota, Grand Forks, North Dakota, USA
3. Department of Oral Biology, College of Dentistry, University of Florida, Gainesville, Florida, USA
4. Department of Pharmaceutical Sciences, School of Pharmacy, College of Health Professions, North Dakota State University, Fargo, North Dakota, USA
5. Department of Geriatrics, School of Medicine and Health Sciences, University of North Dakota, Grand Forks, North Dakota, USA