La Regina, M., Vertulli, C., Gussoni, G., Fontanella, A., Ballardini, G., Brucato, A., Orlandini, F., Murialdo, G., Campanini, M. and Manfellotto, D. 2021. Not-for-profit observational study to evaluate the quality and safety of care in <em>outliers</em> hospitalized with medical diseases - Study Protocol of Safety Issues and SurvIval For Medical Outliers (SISIFO study). Italian Journal of Medicine. 15, 1 (Mar. 2021). DOI:https://doi.org/10.4081/itjm.2021.1447.