Pre-operative prevalence of asymptomatic carriers of COVID-19 in hospitals in Catalonia during the first wave after the resumption of surgical activity Marcos de Miguel Negro; Anna González Tallada; Miriam de Nadal; Alfons Biarnes Suñé; Susana Manrique Muñoz; Magda Campins Martí; Astrid Álvarez Pérez; Jordi Castellnou Ferré; Ana Pedregosa Sanz; Gal.la Rouras Hurtado; Javier Martínez Cabañero; Esteban Osorio Salazar; Antonio Montero Matamala; Judit Saludes; Alessandra Verónica Binagui Buitureira; Carla Farré Tebar; Maria Laura Baumgartner Lucero; Montserrat Cadena Serramitja; Marta Lacambra Basil; Ana Faura; Néstor Fabián Ibáñez Trujillo; Rocío Delgado García; Francisco Javier Santiveri Papiol; Fernando Escolano Villén; Ana Tejedor Navarro; Carme Deiros García; Fernando Remartínez Fernández; Javier Tobito Ramírez; María Lluisa Moret Ferrón; Óscar Salmerón Zafra; Xènia Isern Domingo; Naiara Villalba Blanco;