Purpose: Ecological and laboratory studies suggest face masks are an effective non-pharmaceutical intervention for reducing spread of SARS-CoV-2. These studies cannot measure individual risk reduction or account for individual behavioral and demographic confounders. Here we present a novel longitudinal assessment of the protective role of masks in a national cohort of individuals enro... https://www.pomyslnaszycie.com/life-is-better-with-my-boys-womens-graphic-tee-ice-blue-online-now/