Transmission of COVID-19 in 282 clusters in Catalonia, Spain: a cohort study
Michael Marks*, Pere Millat-Martinez, Dan Ouchi, Chrissy h. Roberts, Andrea Alemany, Marc Corbacho-Monné, Maria Ubals, Aurelio Tobias, Cristian Tebé, Ester Ballana, Quique Bassat, Bàrbara Baro, Martí Vall-Mayans, Camila G-Beiras, Nuria Prat, Jordi Ara, Bonaventura Clotet, Oriol Mitjà