Frasier, Alicia, Heidi Guyer, Laura DiGrande, Rose Domanico, Darryl Cooney, and Stephanie Eckman. “Design for a Mail Survey to Determine Prevalence of SARS-CoV-2 (COVID-19) Antibodies in the United States”. Survey Research Methods 14, no. 2 (June 2, 2020): 131–139. Accessed April 18, 2024. https://ojs.ub.uni-konstanz.de/srm/article/view/7757.