Is Age the Most Important Risk Factor in COVID-19 Patients? The Relevance of Comorbidity Burden: A Retrospective Analysis of 10,551 Hospitalizations oleh Valero-Bover D, Monterde D, Carot-Sans G, Cainzos-Achirica M, Comin-Colet J, Vela E, Clèries M, Folguera J, Abilleira S, Arrufat M, Lejardi Y, Solans Ò, Dedeu T, Coca M, Pérez-Sust P, Pontes C, Piera-Jiménez J