L. M. da S. . Oliveira, “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, vol. 62, p. e91, Nov. 2020, Accessed: May 21, 2024. [Online]. Available: https://www.revistas.usp.br/rimtsp/article/view/183327