1. Division of Chest Medicine, Department of Internal Medicine, Mackay Memorial Hospital, Taipei, Taiwan, R.O.C
2. Department of Medicine, Mackay Medical College, New Taipei City, Taiwan, R.O.C
3. Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu, Taiwan, R.O.C
4. Department of Medical Research, Mackay Memorial Hospital, Taipei, Taiwan