BACKGROUND: In 2007 WHO issued a guideline to improve the diagnosis of smear-negative and extrapulmonary tuberculosis (EPTB) in HIV-positive patients. This guideline relies heavily on the acceptance of HIV-testing and availability of chest X-rays. METHODS AND FINDINGS: Cohort study of TB suspects in four tuberculosis (TB) clinics in Phnom Penh. Cambodia. https://parisnaturalfoodes.shop/product-category/sea-buckthorn/