Source: Vardavas, C. I., Nikitara, K. (2020). COVID-19 and smoking: A systematic review of the evidence. Tobacco Induced Diseases, 18(March), 20. https://doi.org/10.18332/tid/119324 COVID-19 is a coronavirus outbreak that initially appeared in Wuhan, Hubei Province, China, in December 2019, but it...