Relative low incidence of post-covid syndrome in homeless infected during second wave in spring 2021 during COVID-19 = Relatívne nízka incidencia post-COVID-syndrómu u bezdomovcov počas druhej vlny COVID-19 na jar 2021 / Maria Bielova ... [et al.]. Lekársky obzor Roč. 70, č. 12 (2021), s. 454-456