1. Division of Pulmonary Critical Care, Sleep, Hyperbaric Medicine and Allergy Dept. of Medicine Loma Linda University School of Medicine Pulmonary Section VA Loma Linda Healthcare System Loma Linda California USA
2. Cardiff School of Sport and Health Sciences Cardiff Metropolitan University Cardiff UK
3. Department of Cellular and Physiological Sciences Faculty of Medicine University of British Columbia Vancouver BC Canada
4. Centre for Heart, Lung and Vascular Health Faculty of Health and Social Development University of British Columbia – Okanagan Kelowna BC Canada