Farsalinos, Konstantinos and Bagos, Pantelis G and Giannouchos, Theodoros and Niaura, Raymond and Barbouni, Anastasia and Poulas, Konstantinos (2021) Smoking prevalence among hospitalized COVID-19 patients and its association with disease severity and mortality: an expanded re-analysis of a recent publication. Harm Reduction Journal , 18 , p. 9.