1. Department of Chest Medicine; Taipei Veterans General Hospital; Taiwan Republic of China
2. School of Medicine; National Yang-Ming University; Taiwan Republic of China
3. Hsinchu Mackay Memorial Hospital; Taiwan Republic of China
4. Taipei Tzu Chi Hospital; Taiwan Republic of China
5. Sijhih Cathay General Hospital; Taiwan Republic of China
6. Taipei Cancer Center, College of Medical Science and Technology; Taipei Medical University; Taiwan Republic of China