Doerfler MD, Truitt KN, Fisher MJ, Theron G, McFall SM. A novel collection cup for tuberculosis sputum in South Africa: engineering design and user testing considerations. GHI [Internet]. 2018 Nov. 28 [cited 2024 May 3];1(2). Available from: https://journals.uct.ac.za/index.php/GHI/article/view/642