Lippi, G., C. Mattiuzzi, and G. Cervellin. “Google Search Volume Predicts the Emergence of COVID-19 Outbreaks: Google Trends and COVID-19 Outbreak”. Acta Bio Medica Atenei Parmensis, Vol. 91, no. 3, Sept. 2020, p. e2020006, doi:10.23750/abm.v91i3.10030.