Preexisting hypertension is associated with a greater number of long-term post-COVID symptoms and poor sleep quality: a case¿control study - Fernández de las Peñas, César; Torres Macho, Juan; Velasco Arribas, María; Plaza Canteli, Susana; Arias Navalón, José Antonio; Hernández Barrera, Valentín; Guijarro, Carlos (My University, 2022)