HernĂ¡n, Miguel AYotti-Alvarez, Raquel2021-03-092021-03-092021-03Am J Public Health. 2021 Mar;111(3):414-415http://hdl.handle.net/20.500.12105/12152engVoRhttps://ajph.aphapublications.org/authorinstructions/editorial-policiesCOVID-19SARS-CoV-2Two Pandemics, Two Surveys in the United States and in SpainAttribution-NonCommercial-NoDerivatives 4.0 Internacional335666501113414-41510.2105/AJPH.2020.3061051541-0048American journal of public healthopen access