David, A, P Marokane, L Singh, J E Farley, P da Silva, W Stevens, and L Scott. “Not so Simple: Implementing a Sputum Jar to Enhance TB Diagnostic Yield”. South African Medical Journal 115, no. 5 (June 3, 2025): e3310. Accessed May 9, 2026. https://samajournals.co.za/index.php/samj/article/view/3310.