1. Ashour HM, Elkhatib WF, Rahman MM, Elshabrawy HA (2020) Insights into the recent 2019 novel coronavirus (SARS-CoV-2) in light of past human coronavirus outbreaks. Pathog (Basel, Switzerland). 9(3):186. https://doi.org/10.3390/pathogens9030186
2. Peng X, Xu X, Li Y, Cheng L, Zhou X, Ren B (2020) Transmission routes of 2019-nCoV and controls in dental practice. Int J Oral Sci 12:9
3. Cascella M, Rajnik M, Cuomo A, Dulebohn SC, Di Napoli R (2020) Features, evaluation and treatment coronavirus (COVID-19). https://www.ncbi.nlm.nih.gov/books/NBK554776/
4. CSSE at Johns Hopkins University (2020) Coronavirus resource center. https://coronavirus.jhu.edu/map.html. Last Accessed 15/04/2020
5. Italian Ministry of Health (2020) Covid-19, situation report update at 13 April 2020. https://www.salute.gov.it/portale/news/p3_2_1_1_1.jsp?lingua=italiano&menu=notizie&p=dalministero&id=4228. Last Accessed 15/04/2020