Sacco, Rosario, Antonietta Condoluci, Lucia Stella Curto, Vincenzo Orsini, Roberto Romano, Giuseppina Vescio, Nikolaos Filiotis, Michele Ammendola, Giarelli Guido, and Giuseppe Sammarco. 2018. “A New Frailty Index As a Risk Predictor of Morbidity and Mortality: Its Application in a Surgery Unit”. European Journal of Oncology 23 (1), 41-46. http://mattioli1885journals.com/index.php/Europeanjournalofoncology/article/view/6938.