1. Department of Biomedical Sciences Heritage College of Osteopathic Medicine, Ohio University, Athens, Ohio
2. Diabetes Institute, Heritage College of Osteopathic Medicine, Ohio University, Athens, Ohio
3. Basque Center for Applied Mathematics, Bilbao, Basque Country, Spain
4. Department of Mathematics and Programs in Neuroscience and Molecular Biophysics, Florida State University, Tallahassee, Florida