1. Army Tuberculosis Prevention and Control Key Laboratory, The 8th Medical Center of PLA General Hospital, Beijing, P. R. China;
2. Beijing Key Laboratory of New Techniques of Tuberculosis Diagnosis and Treatment, Institute of Tuberculosis Research, The 8th Medical Center of PLA General Hospital, Beijing, P. R. China;
3. Respiratory Department, The 8th Medical Center of PLA General Hospital, Beijing, P. R. China