author        = "Núñez-Cortés, R. and Malhue-Vidal, C. and Gath, F. and
                       Valdivia-Lobos, G. and Torres-Castro, R. and
                       Cruz-Montecinos, C. and Martínez-Arnau, F. M. and
                       Pérez-Alenda, S. and López Bueno, R. and Calatayud, J.",
      title         = "{The impact of Charlson comorbidity index on the
                       functional capacity of COVID-19 survivors: a prospective
                       cohort study with one-year follow-up}",
      year          = "2022",