Fig. 1From: Household air pollution and risk of pulmonary tuberculosis in HIV-Infected adultsStudy flow diagram. PLHIV: person living with HIV-infection; ART: antiretroviral therapy; DRC: Democratic Republic of Congo; PTB: pulmonary TB; CO: carbon monoxide; HAP: household air pollution; VOC: volatile organic compounds; 1-OHP: 1-hydroxypyrene; SPMA: S-phenylmercapturic acid (note: VOC, 1-OHP, and SPMA not presented in this article)Back to article page