Zühlke, Liesl, Stephen Brown, Antoinette Cilliers, Ebrahim Hoosen, John Lawrenson, and Hopewell Ntsinjana. 2020. “Direct and Indirect Effects of the COVID-19 Pandemic on Children With Cardiovascular Disease”. SA Heart Journal 17 (3):338-45. https://doi.org/10.24170/17-3-4381.