1. Department of Physiology, School of Medicine, College of Medicine, Taipei Medical University, Taipei 110, Taiwan
2. Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei 110, Taiwan
3. Department of Materials and Mineral Resources Engineering, National Taipei University of Technology, Taipei 106, Taiwan
4. School of Respiratory Therapy, College of Medicine, Taipei Medical University, Taipei 110, Taiwan
5. Division of Pulmonary Medicine, Department of Internal Medicine, Taipei Medical University Hospital, Taipei 110, Taiwan