V. Perrone, C. Ripellino, M. Cappuccilli, M. Leogrande, A. Cinti Luciani, and L. Degli Esposti, “The economic impact of multimorbidity in Italy: evaluation of direct costs and scenario analysis of patients with type 2 diabetes, heart failure, and chronic kidney disease using real-world data”, Grhta, vol. 12, no. 1, pp. 205–213, Sep. 2025.