1. From the Woolcock Institute of Medical Research (G.B.M., P.T.B.N., T.-A.N., K.B.L., D.T.T.T., Q.T.N.V., O.T.T.L., Y.H.N., P.H.M., J.H., G.J.F.), the National Lung Hospital (N.V.N., H.B.N.), the National Institute of Hygiene and Epidemiology (V.-A.T.N..), and the National Tuberculosis Control Program (N.V.N., H.B.N., K.H.T., S.V.N.), Hanoi, and the Center for Social Disease Control, Ca Mau (K.H.T., S.V.N.) — all in Vietnam; the South Western Sydney Clinical School, University of New South Wales (G.B.M., J...