Therefore investigators designed a randomised, placebo controlled study involving 471 HIV-positive and 416 HIV-negative adults in Dar es Salaam, Tanzania, with sputum-positive pulmonary tuberculosis.

• 因此调查人员设计一个安慰剂克制研究，包括471HIV阳性和416HIV阴性成年人在坦桑尼亚首都达累斯萨拉姆，这些人都是唾液阳性的肺结核病人。