6Schluger NW. Changing approaches to the diagnosis of tuberculosis [ J ]. Am J Respir Crit Care Med, 2001, 164 (2) : 2020-2024.
7WHO. BCG Vaccine [J]. WER, 2004, 79 (4): 25-40.
8Lugosi L. Theoretical and methodological aspects of BCG vaccine from the discovery of Calmette and Guerin to molecular biology: a review[J]. Tuber Lung Dis , 1992, 73 (3) : 252-261.
9WHO. A Discussion Document. Geneva: Department of Vaccines and Biotogicals[S]. 1999.
10Clemens JD, Chuong JJH, Feinstein AR. The BCG controversy: a methodological and statistical reappraisal[J]. JAMA, 1983, 249: 2362-2369.
