Pattern of early human-to-human transmission of Wuhan 2019 novel coronavirus (2019-nCoV), December 2019 to January 2020
Riou, Julien and Althaus, Christian L., Eurosurveillance, 25, 2000058 (2020), https://doi.org/10.2807/1560-7917.ES.2020.25.4.2000058