1 Division of Gastroenterology & Hepatology, Department of Medicine, Enteric Neuroscience Program (ENSP), Mayo Clinic, Rochester, Minnesota.
2 Section of Pharmacology and Toxicology, Department of Neuroscience, Psychology, Drug Research and Child Health (NEUROFARBA), University of Florence, Florence, Italy.
3 Medical Scientist Training Program (MSTP), Mayo Clinic, Rochester, Minnesota.
4 Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota.