1. Division of Endocrinology, Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, CO
2. Department of Anesthesiology & Perioperative Medicine and Department of Physiology & Biomedical Engineering, Mayo Clinic, Rochester, MN
3. Department of Experimental and Clinical Biomedical Sciences "Mario Serio," University of Florence, Florence, Italy
4. Exercise Science Program, Department of Physical Therapy, and Athletic & Human Performance Research Center, Marquette University, Milwaukee, WI