Surgery for colorectal cancer in elderly: a comparative analysis of risk factor in elective and urgency surgery - Boselli, Carlo; Cirocchi, Roberto; Gemini, Alessandro; Grassi, Veronica; Avenia, Stefano; Polistena, Andrea; Sanguinetti, Alessandro; Burattini, Maria Federica; Pironi, Daniele; Santoro, Alberto; Tabola, Renata; Avenia, Nicola (Aging Clinical and Experimental Research, 2017)