Pollán, M., et al. (2020, July 6). Prevalence of SARS‐CoV‐2 in Spain (ENE‐COVID): a Nationwide, Population‐Based Seroepidemiological Study. The Lancet. Retrieved July 7, 2020, from https://www.thelancet.com/action/showPdf?pii=S0140‐6736%2820%2931483‐5