Machemedze, T, et al. “Prevalence and Socioeconomic Determinants of Post-Acute Sequelae of SARS-CoV-2 Among Individuals from a Peri-Urban Township and an Informal Settlement in Johannesburg, South Africa”. South African Medical Journal, vol. 116, no. 4, Apr. 2026, p. e3643, https://doi.org/10.7196/SAMJ.2026.v116i4.3643.