RT Journal Article SR Electronic T1 Tuberculosis in the Third World. JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP 689 OP 691 DO 10.1136/thx.46.10.689 VO 46 IS 10 A1 S Grzybowski YR 1991 UL http://thorax.bmj.com/content/46/10/689.abstract AB