Oliveira LM da S, Tiyo BT, Silva LT da, et al. Prevalence of anti-SARS-CoV-2 antibodies in outpatients of a large public university hospital in Sao Paulo, Brazil. Rev. Inst. Med. Trop. São Paulo. 2020;62:e91. Accessed May 15, 2024. https://revistas.usp.br/rimtsp/article/view/183327