Clinical factors affecting short- and long-term mortality in older patients with COVID-19: a retrospective cohort study oleh Benedetta Pennella, Francesca Rotunno, Martina Mercuri, Marco Guerci, Mauro Molteni, Marta Biancucci, Clelia Berton, Francesca Troian, Paolo Maria Tripodi, Alessia Gilio, Antea Milano, Daniela Dalla Gasperina, Francesco Dentali, Aldo Bonaventura, Andrea Maria Maresca