A Controlled Trial of 3-Month, 4-Month, and 6-Month Regimens of Chemotherapy for Sputum-smear-negative Pulmonary Tuberculosis: Results at 5 Years

A Controlled Trial of 3-Month, 4-Month, and 6-Month Regimens of Chemotherapy for Sputum-smear-negative Pulmonary Tuberculosis: Results at 5 Years