1. Department of Physiology, University of Arizona, Tucson, Arizona, United States
2. Graduate Interdisciplinary Program in Physiological Sciences, University of Arizona, Tucson, Arizona, United States
3. Department of Biological Structure, University of Washington, Seattle, Washington, United States
4. Department of Physiology, University of Arizona, Tucson, Arizona, United States 4Department of Biomedical Engineering, University of Arizona, Tucson, Arizona, United States