Reviving Decommissioned Ventilators How a Circular Economy Approach Can Assist in Tackling the South African Shortage of Ventilators during Covid-19. The Thinker [Internet]. 2020 Jun. 1 [cited 2024 Jul. 17];84(2):40-4. Available from: https://journals.uj.ac.za/index.php/The_Thinker/article/view/292