Epidemiological characteristics of COVID-19 cases and estimates of the reproductive numbers 1 month into the epidemic, Italy, 28 January to 31 March 2020 Riccardo, Flavia and Ajelli, Marco and Andrianou, Xanthi D and Bella, Antonino and Del Manso, Martina and Fabiani, Massimo and Bellino, Stefania and Boros, Stefano and Urdiales, Alberto Mateo and Marziano, Valentina and Rota, Maria Cristina and Filia, Antonietta and D'Ancona, Fortunato and Siddu, Andrea and Punzo, Ornella and Trentini, Filippo and Guzzetta, Giorgio and Poletti, Piero and Stefanelli, Paola and Castrucci, Maria Rita and Ciervo, Alessandra and Di Benedetto, Corrado and Tallon, Marco and Piccioli, Andrea and Brusaferro, Silvio and Rezza, Giovanni and Merler, Stefano and Pezzotti, Patrizio and the COVID-19 working group, Eurosurveillance, 25, 2000790 (2020), https://doi.org/10.2807/1560-7917.ES.2020.25.49.2000790