1. Department of Biology; University of Colorado Colorado Springs; Colorado Springs CO USA
2. Department of Emergency Medicine; University of Colorado Altitude Research Center; Aurora CO USA
3. Department of Psychology; University of Colorado Colorado Springs; Colorado Springs CO USA
4. Alma College; Department of Integrative Physiology and Health Science; Alma MI USA
5. Department of Cardiovascular Sciences and NIHR Biomedical Research Unit; University of Leicester; UK