1Department of Surgery, University of California, San Francisco, San Francisco, California
2Department of Anatomy and Neuroscience, University of Melbourne, Parkville, Victoria, Australia
3Laboratory of Integrative and Systems Physiology, Institute of Bioengineering, School of Life Sciences, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
4Department of Physiology, Medical College of Virginia Campus, Virginia Commonwealth University, Richmond, Virginia
5Monash Institute of Pharmaceutical Sciences, Parkville, Victoria, Australia
6San Francisco VA Medical Center, San Francisco, California