Not-for-profit observational study to evaluate the quality and safety of care in outliers hospitalized with medical diseases - Study Protocol of Safety Issues and SurvIval For Medical Outliers (SISIFO study). Ital J Med [Internet]. 2021 Mar. 18 [cited 2025 Jul. 12];15(1). Available from: https://www.italjmed.org/ijm/article/view/itjm.2021.1447