1. University of Texas Southwestern Medical Center and Institute for Exercise and Environmental Medicine, Texas Health Presbyterian Hospital, Dallas, Texas;
2. Montreal Heart Institute, Université de Montréal, Montréal, Quebec, Canada;
3. Département de Pharmacologie et Physiologie, Faculté de Médecine, Université de Montréal, Montréal, Quebec, Canada; and
4. Wakayama Medical University, Wakayama, Japan