SARS-CoV-2 RNA Presence in Outdoor Air of Public Spaces in Valladolid During Winter, 2021 - Silva, Priscilla Gomes da; Gonçalves, José; Rodriguéz, Elisa; García-Encina, Pedro A.; Nascimento, Maria São José; Sousa, Sofia I. V.; Mesquita, João R. (2024)