Silverii, Maria Vittoria, Alessandra Pratesi, Giulia Lucarelli, and Francesco Fattirolli. “Cardiac Rehabilitation Protocols in the Elderly”. Monaldi Archives for Chest Disease 90, no. 4 (November 20, 2020). Accessed June 23, 2021. https://monaldi-archives.org/index.php/macd/article/view/1253.