FRASIER, A.; GUYER, H.; DIGRANDE, L.; DOMANICO, R.; COONEY, D.; ECKMAN, S. Design for a Mail Survey to Determine Prevalence of SARS-CoV-2 (COVID-19) Antibodies in the United States. Survey Research Methods, v. 14, n. 2, p. 131-139, 2 Jun. 2020.