1. Department of Physiology, University of Kentucky Medical Center, Lexington, Kentucky, United States
2. Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, Taiwan
3. School of Respiratory Therapy, College of Medicine, Taipei Medical University, Taipei, Taiwan
4. Division of Pulmonary Medicine, Department of Internal Medicine, Taipei Medical University Hospital, Taipei, Taiwan
5. Department of Physiology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan