Ametta A, Francavilla VC, Polito R, Monda M, Messina A, Monda V, Sessa F, Daniele A, Messina G. Physical activity as protective factor against COVID-19 disease. J. Hum. Sport Exerc. [Internet]. 2020 Dec. 22 [cited 2024 May 14];15(4proc):S987-S991. Available from: https://www.jhse.ua.es/article/view/2020-v15-n4-proc-physical-activity-protective-factor-against-cov