1. Department of Biochemistry and Molecular Biology and Department of Physiology and Biomedical Engineering, Division of Biomathematics, Mayo Clinic College of Medicine, Rochester, Minnesota;
2. Enteric NeuroScience Program, Division of Gastroenterology and Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, Rochester, Minnesota;
3. Department of Biochemistry and Molecular Biology, Mayo Clinic College of Medicine, Rochester, Minnesota; and
4. Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, Rochester, Minnesota