Elderly patients in crisis: unveiling outcomes and management approaches in severe COVID-19 cases - a retrospective analysis from Brazil. - Debone, Mayara Cristina; Nawa, Ricardo Kenji; da Rocha, Daniel Lima; de Oliveira, Marilia Pilotto; Partezani Rodrigues, Rosalina Aparecida; Kusumota, Luciana (Einstein (16794508), 2025)